its good, though, you might want to put something in that empty house in littleroot, also, in the 2nd town, there is a building that you can walk though. i did a little touch up on th tiles(forgot the walktrough building) though, im not sure if i uploaded the right thing....
http://www.2shared.com/file/12575906/394eb0e9/Pokemon_Sapphire__GBA.html