interesting advice coming from you, a guy who is in the "low-contrast-fu scool":wink:
i agree though, id say up it a bit.
low contrast can be nice too - dont lose yourself in the fanfare. solid work.
rugene is right about the photos - they're *everything* on cmon.
my advice:
1) finish the bases! some guys are in to boobs, im in to bases (and boobs). IMHO everything is contextual, so a well thought out base can be the difference between a "meh" and an "ooooh!"
2) the details matter! when you can, sell the TEXTURE. hair is shiny (high contrast) and fabrics are woven (subtle cross hatching). think about this kind of basic composition beforehand - "why is the hair different from the jacket?" then incorporate it in to your painting. also, i always strive to bring out the emphasis intended by the sculptor. for example, on the gunslinger, youve painted the guns in a single monotone color, but there is detail left unexploited there; work with it! in a similar vein, depth is key! you are creating the illusion of a much larger object when you paint a mini, so you must exaggerate "hilights" from "lowlights" to fool the eye in to believing it is looking at something much larger. this goes hand in hand with greenone's comment. up the contrast.