Heh, people can use whatever style they want, its their art
But back on topic, Koblano, those colors do not look good with those images. The skin complextion for the women, just doesn't go well with the colors you've chosen. Also, the woman on the left, has a image of her, I am sure you used opacity to lower it and make it like a phantom. The problem is, you have dark brown like dots on that phantom and it looks like a leopard.
The text doesn't go well with it either...but fix those colors, dark brown, and tan, does not go well with dark blue and other dark colors.... just doesn't mix well.
That blue image is just overall ugly, but you can improve it if you have the will to.
The red image is much better, I have no crits for it because it doesn't need any. It's kinda funny how you make good sigs then you have like...not so good ones..hehe on a rollercoaster I see