What you will need to begin: a computer for research, tracing paper (preferred sized), mixed media paper, any sort of colored pencils, paint, or markers (varying on what you will use to render the final image), a pencil, kneaded eraser, carbon copy paper, artist tape, and a t-square.
The computer will be used for inspiration. Tracing paper is for your rough sketches. Carbon copy paper is for the transferring process. Mixed media paper is a thicker paper than tracing and it is what you will use to put your final image on. Kneaded erasers are helpful because they can form any way to erase big marks or very small ones without leaving any eraser behind.
Illustrating how to draw through a fashion project begins with a mood board. Mood boards begin the ideas flowing. You start by searching images and saving them on to a word document in an overlapping form to depict many different ideas. This board will then compile together to create a whole unit. Using the multiple images, you will create a theme or idea of what your fashion illustration is going to be about.
First you will start with drawing a croquis. A croquis is human body outline that fashion illustrators use to be the foundation of their fashion drawings. croquis are typically made up of nine to ten and a half heads. Therefore, if one was able to measure the length of the body in sections, it would be the same increments as the head size. To begin, start by drawing an oval shaped head. Then, take that measurement and divide the paper up into nine to ten and half horizontal faint lines to be your guide. Next, start by drawing the neck, which should resemble a cylinder. Transition to the first half of the upper body. The width of the shoulders should be one and a half heads horizontally. Then, draw a a horizontal and vertical line to prepare to the body. This helps make sure everything is correctly proportional and it also can be a useful reference guide. The breast should fall between the second horizontal line that stretches across the page. Your hips must start to narrow around the third horizontal line and should align halfway between the neck and the end of the shoulder length. The hips must then curve back out like an hour glass and typically should align with the shoulder width. The lower half of the bottom should start at the third horizontal line as I mentioned earlier and the crotch must end between the fourth and fifth horizontal line, about a quarter past the fourth line. Depending on what pose you decide will vary the width length the legs will be apart from each other. The legs will start half way where you drew the lower portion of the body and the start of the leg will look like three fourths of a rainbow. The crotch should be center between the two arches and straight. There must be a gap where the legs start from the crotch, the legs do not start connected to each other. The thighs start as wide as the hips then narrow as your reach the six and a half horizontal line where the knees start. The knees are best depicted at first with circles to display the joints. The calfs begin following the knee widening back out about two head lengths then narrowing to the ankles. Again, to display joints, a circle is the best start. Finally, the feet should be one head length and will usually start right after the ninth or nine and half depending of the head length of your croquis. Now to complete the body, the arms. The arms must fall at about the fourth horizontal line. If the arms are lying near to the body, drawing one cylinder for the first upper half of the arm is the easiest, then the lower half of the arm should be about one head length and should narrow for the wrist. The hand is best drawn starting with a square. The fingers have three joints each and should be the same length as the outside of the palm. A helpful tip is to constantly glance at your hand then put pencil to paper, so you are being as accurate as possible. The hands are generally larger looking than normal. The face of a croquis should also be spilt into fourths equally. The eyes should be the appropriate width apart so that five of them fit across the head. They are shaped like almonds and the eyebrows lay directly above them a couple centimeters. The ears are in line with the eyes and the length of them should end at the nose. The nose is halfway between the bottom half of the face. The lips are halfway between the nose and the chin. Finally, the lips. You can make smaller lips or more full lips. The width of the lips fall halfway between each of the eyes.
Croquis are generally very whisky and are composed of multiple light pencil strokes.
Once your body anatomy is complete, then you start your sketches for the outfit on the tracing paper as well. If you are trying to show the anatomy of the body, it is best to design form fitting clothes. If you have draw a female model, be sure to include the defining lines on the chest of the design or they may appear like a flat figure.
The transferring process includes a fine pen, sharpened pencil, artist tape, t-square, copy paper, and your original sketch. Before you do anything, tape your mixed media down to your workspace to ensure it doesn't slip out when tracing on it with your artist tape. Start by drawing a one inch border around your mixed media paper. The best way is to take your t-sqaure and mark little dots to ensure its even all the way around before contacting the lines to create a frame. Then you will lay a sheet of copy paper with the graphite side facing down onto the tracing paper. Then lay your tracing paper over it and align the corners to ensure its centered. Then start at the top of the head and work your way down tracing everything. This is just best to make sure you don't miss tracing anything. Press firmly when tracing over your image to ensure the graphite is being transferred. It may come out light on the mixed media, but you then can trace over that with crisp dark lines to look more professional.
Once you have properly traced your image onto the mixed media paper and made it look very professional, then you can start the rendering process using colored pencils, paint, or another sort of color source. Shading is a specific type of rendering process. It is done by small circular swirls and be sure not to press too firmly or the overall image will not look like a fluid shading process.