What Is a Theme?
A theme is something simple like the color scheme of all of your photos. The most popular theme is a blue theme. Blue themes look really bueatiful and clean, but it's up to you. Personally I used to have a blue theme but I deleted all my pictures because I wanted to have a fresh start. Right now I don't really have a specific theme, but I'm trying to get my Instagram back into a theme.
Now Why Is a Theme Important?
A Theme helps bring in an audience. If you only post pictures of cars then people who like cars will follow you. So if you post nice pictures that are similar to something that a person enjoys, then they will likely follow you.
Should I Have a Theme?
Of course! But if you think themes are hard work or you just don't like them then no. Themes are totally not required, but they're just fun to look at and people will admire the effort and time you put into your theme.
What Should I Edit?
When you're editing your pictures make sure to have good quality photos, because no one enjoys low quality pictures. One thing I've noticed is that full body pictures usually get more likes than selfies or other types of pictures like landscape shots.