I'd repurpose it into a shuttle and get rid of those wings and tail. Currently it is woefully underpowered for its dimensions and at the same time pretty expensive due to usage of standard armor (which is rather heavy too). Really, this kind of vessels relies more on speed than on armor.
On the other hand (and that somewhat saves the day) you tried to make a cockpit on such a small scale which is rarely done, so I guess you deserve a somewhat higher rating than this kind of crafts usually gets.
I'd recommend to replace all standard armor with basic one to make it lighter, remove excess parts which serve no purpose or are useless on that scale (GUNS! Actually, with this size of them you could possibly get a drone or two - but any proper fighter will make a pile of debris of this ship) and go for a fast small transport (maybe with a single MG to disturb astronauts). Plus take note of slabs - they can give your vessel more internal space for systems without increasing dimensions much. Also, some systems can be placed on the surface without ruining the vehicle's looks and saving on weight even more.
You can eventually build great, you have what it takes, but you should learn. Check some small-ship builds from older community members, like Klawxx, Crimson Artist, Skylord Luke and others. Explore more, build better, be creative and you'll eventually win ;-)
Thank you so much for the review, and I really really liked what you did with the Avius!