It looks alright. The layout looks good.
A few things come to mind based on my personal opinions.
1: Would it be possible to also add numerical displays for things like pressure, radiation, etc? Either 'in' the bars, or shrink the bars down a little to add a spot for a numerical display next to the bars?
2: The 'background' of the bottom part of the HUD seems like it might be better if it extended to the sides, so it is also behind the External and EVA Suit stat bars. Maybe also make it a little darker/slightly less translucent. But perhaps not as dark as that small window off to the right side.
3: The font/HUD border color seems a little on the light side. Could it be made a little darker? Or perhaps an option added in the game option settings to allow for someone to customize the color, or otherwise have several colors to choose from? (such as blue, green, red, white, and black), with each color having a slight variation of the HUD background color?
On a related idea, having a few parts, like PRES, RAD, OXY or PWR change color (for it or the bar) when they are in a 'caution/very low/very high' and 'danger'/to high/to low' amounts?
4: Personally, I would also like to see a small translucent 'background' (like the bottom part) added to the area behind the compass at the top of the screen.
5: A few elements like the minimap seem a little 'small', but it might just be due to whatever resolution the image was taken at. At 1280.960 about the max my old CRT can handle), The mini-maps looks a little small when I zoom in on the pic so it fills the screen width wise in a picture viewer. If it would appear a little bigger when running at my resolution by default, then it is not an issue.