Thanks for sending in the maps! Unfortunately, only one of the three came through the email fine—the map of the Shrine of Zehim. The other two maps turned into black boxes—I suspect it's probably some sort of Windows versus Mac battle going on there (we're on Macintoshes here at Paizo).
Anyway, as for the Shrine of Zehim map!
This is a pretty excellent map. It's obvious where the entrance is, where the dungeon is (and where the solid rock surrounding it is), and the dungeon itself is an interesting and engaging shape with a cool mix of caves and room contents.
The grid lines are a little distracting; in area 6 they're all but faded away into obscurity by the pattern on the ground, and the partially completed grid in the water kind of clashes against the grid on land. I prefer to see grids that are standardized across all of the map, clear and visible but unobtrusive. Yet the fact that your map does have a grid on it is quite nice.
For map turnovers, we also prefer that all of the fonts used are clear and simple fonts. The title "Shrine of Zehir" is neat, but it's also a bit too fancy for a turnover, and you run the risk when you do this of making made up words like Zehir get misspelled in the final map as a result.
Cool map! And if you have any ideas why this one would come through fine while the other two wouldn't, please resend the other two maps so I can check them out too!