I want to say from the beggining that I never used Photoshop or Unity, I tried to use Unity in 2016 when Max added custom maps and I tried to use it today too, but it's just to complicated for me.
The only thing I used for this skin was Paint. Yes, it looks ******, but hey, it's my first time using paint too. I worked on this skin like 6 hours non-stop (not joking) it was so hard for me to learn the basics, I watched tutorials, I tried to work with unity but finally gave up, my eyes are hurting now omg... I figured out alone wich 2D part of the UV map every part where is on 3D weapon, it was so hard :(
BUT ENOUGH TALKING, here is the skin :
GravityGun Crocodile (or Aligator, idc)
http://prnt.sc/ee420b
I got this idea when I was playing in paint today, I took a picture of an eye and put it on gravity's button, I realized it looks cool and I tought how could I use it, then I saw the gravity's front part looks like a mouth. Then I wanted to do something like this :
http://prnt.sc/ee431j but it didn't work :(
So that's another picture of my skin :
http://prnt.sc/ee43jt (i know it looks ******, but hey it's my first skin, so don't be bad with me)
I am so noob at photoshoping, so I painted every single pixel in paint lol... it took foreever
Anyways, this was my first experience with a skin, it was fun, it took long, but this made me to wanting to learn more and more and get better at editing...
Classic! x3
A little tip that in my opinion my make it look a little better: select the green part of the map and make it in a few types of green, like the same idea as I did to blue here: http://vvcap.com/3p4AwI6rgI6
Just make the difference between the colors not a big difference. But it's just my opinion, tho :P