Hello! So I am newbie-ish to Pathfinder in general and very much new to GMing, and I was wondering if y'all might help me work out a problem I'm having with designing my next map.
Some background - I've been running with 3 PCs for the first time a campaign of my own making, with my own lore and such. Each adventure has been split into 2 maps, which I draw on one of those hard-cardboard folding two-sided maps, and I generally try to keep to that format, at least for each of the adventures in this campaign.
So adventure-wise, my PCs have just gotten on a boat to navigate a perilous marshland, home to an old but vicious dragon turtle. My plan is to have them roll to advance the ship or attack, and they have to navigate the waters and make it safely to the other side. I've pretty much got this part figured out.
What I need help on is Map 2 - on the other side of the marsh, the PCs are going to find themselves back in the starting town, but everything seems... off. Indeed, by this point the starting town is many miles and an ocean away from where they are. They've actually entered a decrepit, haunted village where some old, nasty experiments once took place. Deep in the basement of one of the houses is an imprisoned djinn, tortured beyond the threshold of sanity, whose consciousness is being used to create the illusion. My PCs need to investigate the town and resist the temptations and trials in order to uncover the djinn and release it from its bonds, breaking the spell.
So my issue is - how the heck do I set up map 2? I have the layout of the original town - I can just use my original map - but any advice on how I could hint at the reality of the situation would be appreciated. My current idea is to just be quick with some dry-erase markers, but that sounds like it would grind the session to a halt while I drew the differences onto the town.
Thanks!