feedback and critique appreciated!
The visor doesn't read space-y, for 2 reasons: it doesn't appear spherical because of both angular outline (on the right side) and rectangle reflections; it looks dull opaque rather than shiny half-transparent with dark inside and sharp speculars from the harsh space light. Check references!
I like the subdued palette, but the dark green is either a wrong choice of hue for this particular piece, or maybe just misused. Try swapping it with the dark bg color (space doesn't need to be black!)