The thing you lack in most of your signatures is the correct choice of colors. You choose a render that contains X and Y colors, you want to use brushes with X and Y. It is nice to add extra colors, but try to stick with the original colors of the render in order to blend it in well. You also need to consider lightening as well, in the current signature you're using, it seems to me that the render is very bright as if the render was taken from an outside day shot, yet, the background is very dark and has colors that don't match the render in any way. Still, I can see a difference between your first and current signature, which is something. Keep improving, good luck
The thing you lack in most of your signatures is the correct choice of colors. You choose a render that contains X and Y colors, you want to use brushes with X and Y. It is nice to add extra colors, but try to stick with the original colors of the render in order to blend it in well. You also need to consider lightening as well, in the current signature you're using, it seems to me that the render is very bright as if the render was taken from an outside day shot, yet, the background is very dark and has colors that don't match the render in any way. Still, I can see a difference between your first and current signature, which is something. Keep improving, good luck
