The photo isn't bad, but it seems there is some motion blur in the image and it is slightly overexposed, so I'd suggest using a faster shutter speed if you can. If you feel you can't, you have a few options, most of which include buying something.
Depending on the camera type you have, you could:
- use a string of some kind you'd put around your neck and hand/camera, so you would be able to relax your hand/camera a little tensing up the string (you might be able to use a camera strap for this).
- use a bean bag
- use a chestpod
- use a monopod
- use a friend
- use a tripod
Make sure you use a rolling motion when pressing the shutter and if you focus manually and your camera is in manual mode, it should be safe to have the shutter half pressed, particularly on a DSLR.
Not sure whether the above helps, but I hope so
I should be able to post a small review of a chestpod this weekend, so if you're interested, check out the reviews sub-forum a few times during the weekend.
EDIT: I forgot to mention you could use an external light source (flash, LED lights, etc.) as well if you need a faster shutter speed.