Want me to add your tiles? We'd be happy to have them! To make it as easy as possible for Dave to add them, try to keep to the following guidelines:
GIF, PNG, or JPEG are preferred. (If you can compress them, all the better.)
Every set of tiles has the same pattern along the edges so they match up when placed in the mapper. Basically, for every 5 grid squares, the middle square is part of a path, door, exit, etc. See below:
For side-view tops and top corners, ground level should be directly between grid squares 5 and 6 on the right and left edges of the tiles in order to match up.
If at all possible, create your tiles with extra hashing or fill past the tile boundary, then crop it to the appropriate size. This ensures that the hashing looks a bit more seamless when maps are generated.
Not sure if you can do all that? No worries — get as close as you can and Dave and his crew will help you from there.
Send your tiles to firstname.lastname@example.org along with your desired display name, initials, a short bio, your blog or site's link, and a description of the tiles you're sending.
If you have graphical skills and want to help format others' tiles, send Dave an email as well.