These are very cool! Great job with the artwork!!

Readers of this post would also probably be interested in this post:
https://steemit.com/art/@artist1989/custom-steem-and-steemit-art-and-instructions-on-how-to-create-your-very-own-steem-steemit-gear-t-shirts-coffee-mugs-etc

It has instructions on how you can create/order shirts branded with any Steemit related images. It is pretty much as simple as selecting your style/size and uploading the image you want. Pretty cool stuff!