Dark Lugia: The outline is disrupted by light blotches. The lightest outline shade shouldn't be lighter than the darkeest body shade (except in some cases, but this is not one of them)
Growlithes: Outline should be recolored on the 2nd one
Fortuse: Outline needs to be refined, and shading needs to have a gradual curve. Nice idea though.
Smeargle: Fix the shading so that it looks more normal, and fix the outline on the feet. The paintbrush should come up into a point instead of being so.... stubby.
Melodhyne: Have you ever seen a music note before? The thingy on it's back should be taller and thinner.
Mockii: Shading is nice, although it should have a more isometric pose x_X
Artist: 0_o that still looks female. Take the hiar out from the back of the head, and.... change the eyes or something.
Other Trainer: Hardly any flaws.