Hi!
Since it's so blurry, you are probably standing (or, more likely squatting like me!) closer than the minimum focusing distance for your camera. It should say in your manual what the distance is. It is about 5-8 feet with your average camera.
Another thing to keep in mind is, the larger you try to make a small photo, the grainier (more pixelized) it will become, and you will lose the fine details.
I use Adobe Photoshop to crop and resize my photos, and you can also change the brightness/contrast and color, etc.
HTH! I think having any picture, even a slightly blurry one, is better than not having a gallery at all!
Jen