Awesome job and pattern as well! Looks like a Greg Paul piece.
Posture...yes....in your opinion, could a Marshosaurus or any theropod cross its feet? That is one of two valid explanations for his feet as drawn. The other is that he's stepping down a bit, like into a shallow hole or ditch.
Cool drawing! Looks kinda neovenatorid...
Very cool. I like the other Marshosaurus's posture better, but this one has some beautiful patterns.