can't believe I JUST saw this thread! ugh!
Peeps, how old is the Canon? I know of their powershot line but can't remember off hand.
Five thoughts that it didn't seem anyone mentioned.
1, if you don't have your tripod with and can't find something to rest it on, take a knee. Depending on what's comfortable, have one knee on the ground, other knee at a right angle. Now, you have two choices. Place the camera on the knee and take the shot, or if you want something higher, place your elbow on your knee. Open your palm, place camera on palm. Take shot.
2, If you go into any of the manual modes (P, AV, TV, M), you might be able to access a flash setting. It's in the function menu. If not, there's another trick you can do. Go to P, and prep the shot you want (flash off). It'll give you a readout of your shutter speed and aperture values. Next, switch over to M, and enter in those shutter speed and aperture values. Now turn flash on, and go to the Function menu. In there, you should see something about the flash, and have around 4 different flash levels. Take pics at the varying levels for different results. Use a tripod, object, or the trick in #1 to steady the camera.
3. Before taking the shot, if possible, take a deep breath and hold it. This'll keep your body much more steady and ready for that shot. Squeeze the shutter button - don't push it.
4. Use the 10-second timer if you can. Even if the camera's on a tripod, you can still move it just by squeezing the shutter button. Turn on a 10 or if you have it 2 second timer. That way, you align your shot, and pretty soon it's Mr. Powershot Machine GO.
5. Ever see how soldiers stand and fire? How's your stance? DO NOT use one hand on each side of the camera. Way too much wobbling going on. Rather, hold the camera with the right hand on the right side, but use your left hand as a platform underneath the camera. Now you're much steadier. Also, when facing the target, put one foot forward, the other behind. This'll make you more steady. Take the shot facing one of your sides.
Damn I started out with two things but kept going haha. Maybe I should just do a how-to. sigh.