What do you model apart from railroads ?

[Sumpter250]

Those photos show off some fantastic work, and they look so realistic it makes me realize how far back I'm starting from.

I can only speak for myself, about how far back I started. It's close to sixty years now, that I've been building models. . . . and I'm still learning! There are still a lot of materials, and techniques that I haven't tried, and still some things I've never built.
Of the pictures I posted, my favorite model has to be the gaff rigged cutter. I laid down the lines for her in November of 1969, and started construction in 1970, while deployed to the Mediterranean in USS Columbus CG-12. It took six years (with a lot of interruptions) to complete the 1/64 scale,plank-on-frame build/rig + display case.
The picture is a bit "unfair", the small boat astern, is the fourth build. . . the first three didn't go well, and were......"not selected for use". ( :o it happens when you try a new technique for the first time, I'd never build a plank-on-frame 17' skiff in 1/64th scale before )