This will be my first time detailing, I was wondering if anyone could help me by giving me tips/advice on detailing. It’s the FNAF 1 map. The ugly short walls on the front and the back are my attempts at covering redstone😅

Big walls of a uniform material don’t usually look good. Break them up by adding columns, cornerpieces, (fake) windows, architectural details such as arches, decks, etc. Plus, you can texture the wall by using similarly-coloured blocks. Granite and packed mud work well with brick. Look up “minecraft texturing”.