A few days ago I reviewed a selection of critical mass miniatures suitable for the ME universe with just a little conversion work[link]. So here they are. As you can see, I'm hardly the greatest sculptor in the world when it comes to the old milli-put, but I don't think they look too bad at all. In fact, if I'd just left the two "horns" on the Salarians un-split they'd have made good Battarians as well.
By the way, about the paint-job: the highlighting was much better before I put the matt varnish on. I don't normally use varnish when painting 28mm, but on 15mm it seemed pretty much essential. What I hadn't realized was that it might have been smarter to put the matt coat on before highlighting. Ah well. Live and learn.