That really is coming along nicely. And don't worry about the fact you're using PS7 - it's perfectly functional, I was using it myself until just a few weeks ago. And to be honest, the major difference I've seen in relation to working on projects like these are the ability to create groups for your layers, and select multiple layers at once. Everything else I can do in CS3 I can do in PS7. So your tools are perfectly functional

And really, just ask anyone else here, it's not the tool that makes the map, it's the artist. How you bring your vision across is the important thing.

keep up the great work!