Great maps, but they are still pretty small. The upper level indicates more ruins off the top of the map, and groups that I play with would explore the upper reaches completely before venturing into the lower levels. Your Forgotten Monastery maps are more complete and would provide the extra exploration space. I prefer large maps where players can use missile weapons and spells before closing in for melee battles.
Your artwork is fantastic! Absolutely love it. I hate to use the word "but," so I'll say "and" I need more space on them. I would buy your work for VTT if the maps had more area covered. I don't need day and night maps since my VTT software has lighting effects covered, but the various terrain substitutes are great..