(there are mostlikely online quizzes you can take about what kind of name would fit for you but, these tests normally arent very good)
Sinse you like art but arent good at it, this means you are striving to get better. So we can start there.
2-Piece NAMES
Artcraft CUTIE MARK: Vibrant rainbow colored creeper.
(combow og minecraft and art)
Paintkeys CUTIEMARK: A computer keys with the button ctrl Pressed down next to one or two other computer keys
(this one has a ring to it: keys like computer keys)
Splotchhooves CUTIE MARK: A paint splotch
(splotch as in splatter of color or paint)
Dapplesplotch CUTIE MARK: Crayon spots or streaks.
(dapples of crayon give off a kind of innicent child affect)
1-Piece NAMES (like rarity)
Remona CUTIE MARK: a pencil drawing a line, or leaving a line behine it
(has a slow elegant tone about this name might not be fitting for your personality)
Ezmerilda CUTIE MARK:
(a faster, sharper name, might fit you better)
Sezo CUTIE MARK: A thick squiggle of a bug or animal you may like, but one that is simple.
(short and sharp, kind of tomboyish sounding in my opinion)
Sadie CUTIE MARK: A camer with color or maybe the reflection of soemthign you like in the lens.
( a soft name )
(I left this on your original question before)