Ok so i did now some tests, in the first picture you can see the results after giving it a very dark (Not black) alpha channel to the diffuse texture and a bright alpha channel to the detail texture. Detail texture can be noticed much more, but still it's ruined by the diffuse alpha that's now giving it dark spots on top of it. In the second picture i saved the diffuse texture with no alpha channel at all... it's kind of the result needed but you can still see the diffuse texture ruining it on the left side. And neither should be this way... the diffuse texture should have an alpha texture... I don't know what i'm doing wrong..