Angle Issues.

So I created filter and submited it to the library so I'll have a link for it soon. However I have a question about the angels my filter uses I am honestly not sure how I came up with what I have. Perfect "I made it by mistake" situation that doesnt dissapoint me.

My image rests at a 45degree angle and its overlay rests at a 90degree angle. By overlay I mean I blended it with a texture. It looks okay but I think it will look better corrected. So here is my quest, how did I end up with a 45degree angel in this image, and how can I do this to a simple flat texture with FF (think of my texture as just a JPG or preloaded image)

Heres the image.

Thats exactly what I needed, I understand now. Anyway I posted the filter but I suggest waiting till I update it'll have some new features now that I understand