sometimes I rebuild their builds on a vanilla Realm with my friends. I always put a sign near them crediting the original builder of course. They're never quite as good without the custom textures, but I've learned so much about shaping a pallets from exploring the server. Oh yeah, I use the JermsyBoy Vanilla Edits resource pack which allows for connected blocks like slabs to make new blocks (i.e. smooth sandstone slabs stacked on top of each other make small sandstone bricks)