I just build a building, I feel like the top looks very nice (mixed of dry brushes and a few layers), however the sides feel under detailed. I forgot about texturing the foam before assembling, so I covered it in gribbles, yet the detail still feels a bit off. Was curious if anyone had any thoughts/suggestions on making this look better.
Looks good to me. Top and bottom parts look quite different, if that's what you're concerned about, building can have walls and roof made of different materials (and often they do) so it doesn't seem a big issue to me. For the future, if you want to add some texture to a scratch-built model, you can use some "stone effect" spray can. You can find them at hardware stores.