That looks sorta like a Doomsday level fused with a Rudora level. I am giving you a 7/10 Because:
1. Assuming you tiled the cliffing yourself, it's pretty good
however it is a bit straight..
2. The grass could have a bit more detailing, and I don't mean to add more swamp. The swamp could actually be fixed to have less (or no) errors and use the side peices for diagonal swamp tiling.
3. If you truly wanted this to be a show-off level, you would have made it a beach instead of a mountain/water cliffing and add some deep-deep water tiling near the edge, however I'm not sure what you were planning with this level so I can't hold that against you...
4. Trees stained with blood! Maybe normal colored trees would be more sightly
5. The sand path looks a bit generated, probably is.. you should make your own paths and use all different sandpath tiles... Even if it looks like crap, you still have the good feeling of knowing you made it yourself!
I hope this will help you (probably won't)...
Try to be more creative with your levels and you could be great.
Your pal,
Oink