I also have no artistic ability. So, I cheated.
For this mug, I put the initial stickers in a funky, staggered layout (because I couldn't get them straight.)
This one's ready for the oven!
My daughter did this one:
The flower mugs I did with vinyl. I tried to freehand a flower on there and it looked bad. Really, really bad. So, I scrubbed it off and then cut out a shape with my sizzix on to some vinyl.
Same technique with this one. . .
When it's nice and cool, take them out! These have held up quite well! I tried to scratch the paint off on several points and it's not coming! They're permanent!