DevinNight: This is my first map in photoshop. Only other thing I have done before are some small backgrounds for websites and a single complete skin for phpbb called fae forest (which is horrible outdated by now I believe)

geamon: The map preview is also the resolution the final will be in as that fits my needs. The grid is 39x39 and the final map (level 1 of the keep) is around 2500x2500 in 72 dpi. All objects are made as 1000x1000. Some are smaller and some are bigger. Doing that so I can use the objects in closeup of rooms later.