Some excellent sculpting there cassar, in particular the sniper. The weathering also is not over or \'under\' done either, its just right. I have no sculpting experience myself, but two things bug me a little (probably too late now, but for future reference). 1 - the wheels seem too small in proportion to the rest of the bike. I know GW aren\'t very proportional with their own minis, but it looks strange IMO. Also, though the anatomy on the scout is largely correct, his six pack looks a bit odd, more like out of a comic strip than a real body. (Maybe you did this intentionally?)
Of course take this with a pinch of salt, as I have no sculpting experience myself.
Cheers.