First off, I should say that I don't build 2v2 maps and thus know less about the matter than the average person.
=== DESIGN ===
Generally speaking, the map gives away a cozy vibe. The doodads are reasonable, there's neither too many nor too few. They look natural and the map as a whole is very warcraftish, good job on that.
Only the ruined fountains look a bit off because why would there be a fountain next to a cornfield?
I'm not a fan of the graveyard / "dark" stuff either but that's a matter of taste. However, you're using blight near the goblin labs. I would try to refrain from that because undead will heal their units there. It might be so little that it's negligeable but it's still a style thing that affects the gameplay, and that only ever complicates stuff.
The tree lines at the starting positions differ quite a lot. In the top left, you're pretty far away from the trees while in the bottom right, the base is quite narrow (and in the bottom left corner, there's a dent). I'd even that out.
Both the central gold mines as well as the ones on the side offer very little wood, I believe that's a problem. You might also want to give the more difficult gold mine more gold (like 15000 or so).
The overall map size and the distances between starting positions seem fine. Critters are good.
=== CREEPS ===
Some of the creep camps will attack units that are passing by. For example if you start in the bottom right corner and send a scout to the tavern in the center, it's gonna get toasted:
It's even more problematic with the creep camps at the goblin shops and merc camps.
Also when farming the murloc camp on the side, your units might march through the gold mine creep camp.
Is there a reason why the trolls of many creep camps look in random directions? Same with the murlocs.
When playing 2v2, there are no red creep spots, i. e. nothing you can farm effectively with your teammate. I don't know if that's the case on other 2v2 maps so I don't judge it. It just jumped to my eye
The creep camp at the outter gold mine is lvl 13, but drops a lvl 3 permanent PLUS a lvl 2 tome. That's too much.
The creep camp at the merc camp / goblin shop is lvl 14, but drops a lvl 4 permanent. That's also way too much.
The lvl 10 camp can be farmed by using towers that are pretty much located in your base:
Somebody else must decide whether that's too close or not. I'm not an expert, but it looks rather close to me. In the end you might only need an ancient and a wisp or something to kill it.
=== SUMMARY ===
The map is very pretty. A little too symmetrical looking for me but it's still fine.
The creep camps and gold mines need some fixing.