Well honestly (LOL) I attempted.First one was while watching a few tuts.Then,the second one,I tried again.And I utterly failed.Cause I have a crappy memory.Anyways,what are your thoughts Q . Q
The first one, you used the texture and editing very well. However the image is a bit distorted and abnormal. If you're using photoshop, then you should hold "Shift" while you are resizing the picture. (If you're not using photoshop, I'm guessing it works the same same for other programs.)
The second one is actually good! Another tip, you might want to play around some textures/stocks/brushes. There are tutorial on how to apply textures and stocks. Just play around with it until you are happily satisfied.
I hope that helps~