do not use the fill tool, because it just makes all those ugly lines, and generally sucks. You should use layers to do your shading, and use a normal brush. same goes for the e-pen tool in the background. The generic repeating pattern just doesn't fit.
the only reason the it looks kinda weird is that this is only my second drawing with oekaki shi painter. i didnt know any better, but thanx marcello and dixielandcutie.
drawn in 43 min