First Effort (Advice Welcomed!)
Alright, so I just got started putting some maps together, and I'm learning approximately a billion things a second about GIMP that I never knew. That said, I'm still having a tough time with a few things, right now what's bugging me is how to make pillars/columns for a dungeon that players won't mistake for holes in the floor.
Here's what I'm working on at the moment, just something super basic to try out stuff and make sure I know roughly what I'm doing. The second image is pretty much what I plan to have in the top room. The second image also features a few of those holes masquerading as pillars I mentioned.