My only criticism of his work (which is otherwise awe-inspiring) is that his Miranda doesn't look quite right.
Oh that's meant to be Miranda? For some reason I thought it was a FemShep. Yeah it doesn't look much like Miranda, but then most of the portraits don't look very much like the characters' in-game appearance either (Mordin especially.) They're just easier to identify because they're distinctive aliens.
Not to knock it mind; the guy has an excellent technique and a real flare for detail.