I agree with Charlie's comments and will add a couple

I took a quick peek at your photo stream and there is a common theme, everything is centered and centered subjects are for the most part boring with a documentation feel to them, great for a text book but it doesn't make you stay and "enjoy" the image.
I'm sure there are links to great resource on composition perhaps in the stickies in the beginners section but don't quote me on that.
Here are some tips I got early on that helped me shooting critters:
Eye contact is important. Critter butts are cute and all but faces are much better.
If it is facing or moving in a direction give it space to look or move into.
Get down eye level with them, show the world from their point of view, not ours.
Know your critter. The more you know about them the better opportunities for great shots you create for yourself. How it moves, reacts, takes off, lands, habits etc...
Some food for thought

looking forward to seeing what you come up with next
