This article http://flyosity.com/tutorial/crafting-subtle-realistic-user-interfaces.php http://flyosity.com/tutorial/crafting-subtle-realistic-user-... specific

This article http://flyosity.com/tutorial/crafting-subtle-realistic-user-interfaces.php http://flyosity.com/tutorial/crafting-subtle-realistic-user-... specifically and that blog in general have been massively helpful for me in improving my design skills. I highly recommend you give it a read through.