New Map & problems I need help with

[Zylithan]

I havent looked at your map, but it sounds like there is a sliver of white on one of the borders. I'm also new to map making, but have had problems with importing maps made in other programs to gimp. This white border problem happens a lot. If you zoom way in (in gimp), you can use the paint bucket to remove just those white pixels. If that is the problem.