Thanks for uploading some pictures of the map, I've gone through the map and compiled some feedback for you.
Starting off I found a few sight-lines on the map that may put players in a bit of trouble against a good sniper:
(below control point)
(Across from control point)
Now for my general thoughts on the map: I personally think the map is a bit under scaled, a lot of the areas in the map are oddly built with some brushes out of place and not set flush with the rest of the walls and/or floors and ceilings, and textures in places that are probably unintentional.
Another thing I noticed was there's a lot of areas on the map where you may have forgotten to clip or remove clipping from certain props
The reason why I mention clipping is there are a lot of powerful sentry spots on this map and may cause a lot of problems with play testers, such as these spots on red spawn:
On top of that the map isn't 100% symmetrical as this rock at mid gives one side an advantage to get onto of the rock by prop surfing on it and can allow for Engineers to build a gun on top of it leading to some long range, albeit, cheeky sentry kills.
Another thing I noticed while roaming your map is that Health and ammo are weirdly placed, 99% of all health packs placed on a koth map are always paired with an Ammo kit, here on your map you have those, but you also place a lot of health and ammo packs away from each other alone. Another thing is that with Koth maps, Health and ammo are usually placed away from the control point so the defending team must rely on dispensers or fall back to restock. Right by the control point on your map, there is a Full health and ammo practically right by the point. I suggest you change the standalone packs and look for places on the map that aren't so close to the control point for players to restock.
My advice to you is that I suggest maybe making the map a tiny bit larger, fix some clipping issues, work on health and ammo placement, and continue to work on fixing your brushwork on the map. I look forward to seeing what you make in the future, and if you have any questions on my feedback be sure to let me know.