You used this scull in one of your other tiles too, right? Try not to "reuse" material in tiles. It's much better to draw everything from scratch when you start on a new tile. It'll probably result in higher votes too, in case you care about those things. =)
I hope you take this as constructive critisism. I'm not trying to hurt your feelings. Keep tiling!

/Samuelf

I like the lower border and the transition from sterile metal to organic flowers, however it looks like the use of a photo has introduced some hard edges along the other sides of the tile. A decent attempt for a first tile, keep it up!