>>118167242OP image is either a parody of a very infamous tumblr artist, or the actual tumblr artist.
If it's a parody, gj guy, you are skilled at being a shitty artist.
But looking at that tumblr filename, it likely isn't, and is the actual artist. Of which, no. There is no room for improvment, the artist this is a good art style.
Someone got that twitter screen cap of this artist showing how they got "Better".