Think you can hand hold anything? Experiment. Go outside, choose a subject and test your self by shooting a few frames handheld and same subject again with a tripod. Look at them closely on the computer. You will see a difference.
Here is another test you can do. Find something you can use like this bulls eye. Take a pin light flashlight or laser pointer and step way back. Point the light on the target and see how difficult it is to hold the little light steady. Now image you have a much heavier camera and lens in your hand. How steady are you?
Remember also the further you are from your subject, the greater the effect any shake will have on the image.