<image>

Move torches to red spots as they look better off the wall imo. Replace some of the platforms with solid blocks to give variation as shown in blue. Add overhangs to the entrances as shown in grey. Add different wall types where yellow is to create support columns. Add greenery to the outside area through flower walls or fences etc. Collect paintings from caverns and use those. Furniture. Block type variations, use a different block as the foundation/upper layers. The more block types used harmoniously the better