This definitely would look good on a shirt! There probably are some sites where you can make your own shirts and add a picture on it, so I guess you actually can have this as a shirt, and otherwise you always can use textile-paint
This is an interesting design! It kinda bestrides two great cult worlds of my childhood.. Discworld and Eternia (if Death could ever pardon my blase-ness.. Skeletor is probably Death's bitch in Eternia?!