That urge to bang out a random fighter never really goes away, so lean into it. My best advice before you glue anything: sketch the ship from three angles first, even badly. Half my early builds fell apart beacuse the wings looked fine from the side and completly wrong from the front. Kitbash from whatever's in the bits box, but pick one shape language and stick to it, like round engines with angular panels, not both fighting each other.
Weathering is where these builds come alive. Do the paint chipping with a sponge and whatever colour you used for the base coat, dabbed on edges and panel corners where a crew would actualy walk. Soot streaks behind the engines using heavily thinned black, pulled back with a brush dampened in thinner. Keep it subtle, you can always add more but stripping paint off a small model is misery.
For the stand, drill a hole in the model and the base and use brass rod, not just glue, or the thing shears off within a month on the shelf. And print your decals small. Insignias at tiny scale look ten times better than hand painting ever will, trust me on that one.