So far, looking good. For a starting map, it looks fairly decent. But I'm gonna be 100% honest, this needs to be worked on more if you actually want it to be accepted, it'd be nice if you could post the pictures on the actual thread, too, and with all those imgur pics, just right click > Copy Image URL, then paste it on the thread where it says "add photo".
I gotta say that the screenshots you added were really not enough, considering a lot of them didn't show much or just showed the close up pictures of structures, and I can't really tell what it'd look like from far away, so adding more screenshots would definitely be something I'd suggest, and if you could add some without shaders, that would also be nice.
Next, I want to say some thoughts about the aesthetic look of the map. The spawn, although being pretty nice, is kinda too crammed up in a tiny space, and seems like it would be a pain to get a chest without other people being in front of you, and I just thought having a bigger spawn would be a thing you could consider.
Second, this map looks really small. If MCSG had 12 player servers, this would in no doubt go into that category, but I'm thinking that with 24 players and as few structures as this, it would be kinda hard to get a real chest route. As far as I can tell by looking at screenshots, this map seems to have 2 ways to go after spawn, which could be a bad thing, and I feel as though the general structures in this map are a little bit too simple, I mean, I know of course houses don't need to have detail, but just a little more than a pyramid roof would be cool, and maybe try improving the football field.
I noticed a little sort of spaceship with 14 different chests, which would be a little too OP if somebody had an Ender Pearl, so I suggest trying to either make that less OP, or removing it entirely. I also was taking a look at what seemed to be the deathmatch arena, which looks a little too small or crammed up, and the 4 chests seem a little pointless, same goes with the brick slabs, I think you should work on that just a bit more. And my final recommendation would be to add more "cool stuff", as in add more than houses and roads, think of something cool that would be remarkable in this map.
To summarize, I think that this map really needs more work on, but don't get me wrong, I believe that with the right effort, this map can definitely be picked, but so far, I really think that releasing it as this stage is not a good idea, and that it needs more work. But anyway, good job so far, though. I hope this map goes well.