At first I've figured that the cottage shouldn't have any crazy shape like a circle or a triangle, so I made it a square. The length is 12m and the side is 8m, so it adds up to 96m2. In the cottage there are 4 rooms: 1 Master Bedroom, 1 Bathroom, 1 Guest Bedroom, a Kitchen and a Living Room which expands to a hallway.
When I designed my Master Bedroom, I wanted it to have big windows. I was also not sure what shape my roof should be but at the end I made it a rectangular prism.
My Front View and Side View BluePrint
After I have finished design my blueprint, I now needed to make a 3D model on Tinkercad. This activity involved making the inside, doors, windows and walls.
After I have built base of the cottage, I started making the roof of the building. With a simple triangular prism.