How to revamp an old plain tshirt

So how you make a plain old boring tshirt into a fun colorful tshirt is very easy. All I did here was, get these big round stitchable things in different colors.

Then I thought of a design, here circles of different colors. Then placing them at an appropriate position by measuring and making a small mark to start from, I stitched up all of the things.

This is what I did.