Sorry mate can't help you there For me it's a no show in app manager i have it installed hence it won't show.

Are you not able to fix the dependencies errors you get? Maybe thats the way to go?

Btw what errors do you get anyway maybe someone here can help you out

One thourght have you tried to download the depndencies for mypaint first and then the mypaint in xterm?

Thats the help i can give

e: Nice pic ArnimS, really like the way you did the hair