the thing is, are these logos or illustrations? If they're logos then there is way to much going on in all of them especially effects as the guys have said. I know when you first start out with Photoshop you're all like "must throw every effect and image into it" but the sooner you learn this the better. STOP!
Research is the key thing to do at your stage. Look at what professional designers are doing with logos, you'll always find that keeping it simple is the way forward.
In terms of illustration if I thought you had created the images yourself from scratch, in some instances I'd say not bad, but I don't so copying images and just applying simple effects never goes very well. Also look into vector work, looks like this might be something of interest to you so will be a good thing for you to learn.