One note on text use in general.
In photoshop, when you hit the text tool, the text tool bar (where you select the font/size etc'...) there is an option for text "build".
I've taken a screenshot and added two red lines around the thing I'm talking about.
That box that I've underlined, when you click that, change the setting to something like "Smooth". This won't give your text that rough and "crusty" look that it has.
Also, if you save your image as a Jpeg, then make sure you set the quality to the max. You can leave the format option at baseline, but make sure you make it the max quality.
Either that, or save your images as .PNG.
Jpeg's are fine, just remember to save at the best quality.
Keep playing around with the colors, and slogans. It all comes through practice and patience. Have fun with it!
Best,
-AC
P.S. I realized you asked us to rate it out of 5. Well, to be 100% honest, I'd give it a 2.5-ish. Not that it's bad, it just needs more work and time on it. I'm sure you will get the hang of everything very soon. Remember not to "enlarge" images more than their original size. It'll distort, and pixellate the image, which in turn will look pretty bad. Familiarize yourself with the different tools and filters. Like the blurs and layer modes. Check out some Photoshop tutorials too. Places like
Good Tutorials are great places to get some tutorials!