Some mistakes and suggestions:
1st - 4th Sshot: misaligned textures
5th Sshot: I think the barrel is floating? (not entirely sure but compared with other barrel in the area, shadow for this barrel was MUCH darker)
6th Sshot: This spot is going to be the most hated spot in the map if it's going to be played in pubs. LMAO! (For those of you that don't know, this spot is right in front of the capping position, so you can expect a lot of newbs camping it up here)
Overall it's a pretty good design. But what I don't like is that everything seems so straight and defined. Round some edges (like the slopes in the middle of the map and the side of slopes in front of the capping area). Also, the random areas where sand just turns into grass instantly is a bit odd-looking for my taste. That park with the tree in the middle would normally be fine, but that's underground? XD