Have to agree with Text_Fish. If there is one thing about the interlopers community is they take mapping seriously. I try to give constructive feedback to help people make better maps when I can, as do most of the people on here. However while the map above may be a lot of fun to play for your friends and yourself, it likely will not get much feedback.
If I may add a few tips...
1. Don't use brush based type to display your name. This has long been considered bad and is a waste of brushwork. Make a texture that will do the exact same thing.
2. If you really want to port a map, make is better than the original. If people really like to play the original, why would they want to play yours if it is the exact same. I know you said you changed the layout, which is a good thing, but upgrading the look and taking advantage of updated engine is the real reason a mapper wants to port a map into a new game. Or at least should be... So for instance the large rectangular shapes int he last pic. Making those displacements and more interesting to look at would have a limited effect on gameplay, but make the map far more interesting looking,.
3.Texture scaling and tiling. At first glance you can instantly see the predicative nature of the rock texture you used. Scale the texture up a bit, so it does not repeat as often. Judging by the size of those brushes, you will have to scale them a lot to have it work, so it may even be better to use a larger texture so it does not need to be scaled as much.
I am not trying to be a jerk and rip you down. The fact is we all started somewhere and when we started things didn't look pretty and clean. What helped me get better was people telling things to me straight and teaching me how to make my maps better.