build tips

Hey Y'all, I'm currently building the FT mighty mini corsair (version 2) and am trying to make it look as scale as I can. Do any of y'all have some tips for smoothing seams, filling in gaps, or just adding scale details on foam board builds? I've attached below my build in its current state...

I've realized this is my first post in six years but here goes xD So - I've decided to build my second giant project. I'm going for a 15-ft wingspan Ford Trimotor. I don't care too too much about scale detail but I would like for it to resemble the real thing fairly closely. The challenge here...