This has the vibe of that old Screamin' vinyl kit in 1/4th scale. Much better, of course, looking like a stormtrooper instead of a sorry mess like the old vinyl kit.
The thighs seem a little on the fat side, they could be slimmer (especially on top) and taper a tiny bit more. The thigh "ammo belt" thingy is a bit too small and should be straight on top and rounded on the bottom edges. Also, the detonator has the control panel details but not the raised panel itself (or so it seems looking at your pics).
Other than that, you're golden so far!