Rock with bridge and cave

Rock platform with a path leading to the top, and a cave with two entrances.

I would like to make objects for Sansar users to texture themselves, but I have never textured flat in photoshop myself, so, I have no idea how to unwrap for that purpose.
I unwrapped like I normally would for painting in 3d, then I tried to think of ways to make it possible to paint flat. I used a checker board with different colours, and made numerous markings along the seams.
Here is a link to download the PSD file that contains all the necessary layers, you will even find the wireframe as the bottom layer : https://drive.google.com/open?id=1Mg-4_X0mpJiwtmUkgjCnaPRuP8wBxzOi

Also, Please send feedback through Discord. Let me know if this works, or not. What can I do to make it easier ? Are the markings useful ? The checkerboard pattern ?
If you Use a 3d painting software like 3d-Coat or Substance Painter and would rather have the fbx, ask me on Discord.


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Sorry about the texture glitch, you will see many small markings around the actual lettering, the Sansar uploader is doing that to my texture on upload, I have been trying to reupload without success.
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3468 triangles
Collision 3468 triangles
File size (KB) 122