Thank you :) I already made one online offer of a shirt with one of my drawings.
https://steemit.com/art/@yoganarchista/my-psychedelic-lion-drawing-is-now-available-on-t-shirt

At the moment I am creating another online shop for fashion with my works. It will take some time still but I will let you know when it is finished. You can buy the artworks but that does not imply the right to copy and print them on shirts. If you wish to have this motive on a shirt in black and white I will add a black and white version to my shop :)