That's a nice sketch you have there! I could try to do that skin
but i can't promise anything at all...
The Main Skin: Looks really nice but i think the harderst part of texturing it would be the "Jetpack thing"
The Helmet: Coincidentally i have made some glass helmets based on the regular helmet
The Gun: One can actually retexture the defautl gun model.
The "display with buttons glowing": I think the best for this would be the fabricator (The tool the player has on his right arm when he has a block selected. That can also be retextured.