The layout itself looks pretty decent for the most part, although rather dull on the far right side of the map.
I did notice quite a bunch of cliff errors however (places where you didn't connect cliffs properly, where cliff ends are missing or used an opposite cliff angle of what you should have used).
You also didn't connect a road end to the left side of the FORDs and you also partially overlapped the top water cave with a cliff piece...

Now about the detailing (placement of terrain objects and overlay)... I'm afraid to have to say it mostly looks hideous because you placed most terrain objects (being mostly the trees and bushes) too excessively and repetitively, which gives your map a very unnatural look.
When placing terrain objects and overlay you should try to variate a lot if you want to make your map look more natural and when a terrain object (or overlay) is bigger than a single cell, make sure you don't overlap it with other terrain objects.

You also might want reconsider placing scrap metal on your map (or in least placing it in such a large quantity in a single location), considering scrap metal doesn't spread, has a very low value when harvested and normally only comes from destroyed buildings or units.

A matter which is less important, but you probably want to know about is that the 5 crates you placed in the upper left corner of the map will never appear on multipalyer maps (you can only place crates on singleplayer maps) and even if they did appear, the player wouldn't be able to reach them because the top 3 cells of maps are always impassable.

thnx for ur answer bittah next map i make it better