Although zwift is really good at cartoon drawing-- he has more of a vector drawing style (infact he might be doing vector drawing); yours looks free-handed maybe you should try doing some semi realistic artwork with shading etc.
Veoo: i am working on it now,thanks for cnc.
WeooWeoo> actually i preffer using some program i already have "experience" on.
and i know most tools here and stuff(i know gimp and photoshop are better programs,but i wanna start by a basic to later get to other stuff).
The lines are jank if you are freehanding it I would recommend templates or maybe investing in a drawing pad/tablet although it takes a bit to get used to it helps alot with drawing
just opinion