Hi,

I have just finished making my first skin, and when i tried to put it into LFS, the output was awful (Look at picture). I dont know why this happened and I would like some help with it.

Secondly, i have tried the CMX viewer. But I dont know how to load in my skin on a car there.

Thank you all for your time.

By seeing the picture, you put the car template in the wrong directions hence why it looks all off. You can see how the text that you thought would be on rear bumper is on the rear quarter.
To fix this help yourself with the masterskinnerz kits here http://www.barkingpig.org/msz/pages/kits.php, they have different useful layers like wireframe and blackmask. Another thing to keep in mind is stretching, every car has a different amout of stretching in the final result so what you see on the image editor is often not how it will look like in the final result have a look here: https://www.lfs.net/forum/thread/64975-The-Stretching-of-Skins
The procedure to put a skin into cmx is the same as in lfs, you put the skin in data>skins then in cmx you select the car and the skin that should show up.

This is how the template must be if you want that what you put on one part is actually on that part