Haha this T shirt design is cute! I like the simple minimalist at the front and the idea of having mini icons of steemit features at the back. Just that I feel that placement of the icons is a bit messy, hence it looks busy at the back. It will either turn away people's attention or will intrigue people to peek real close at your back to see each meaning of the icons. Hahaha.
Maybe can consider to realign the icons placements or to reduce icons to only the main ones. Or to have icons to illustrate our steemit writing process. Eg: Step 1: Take pic (camera icon with food) or write (pencil on paper icon) - > Step 2: Upvote icon -> Step 3: Comment/Resteem icon -> Step 4: Earn $ (steemit logo) etc etc