Oh yes, definitely hold it steady if possible. That's one flaw with the iPhone actually, if you hold the phone in landscape orientation and are planning to use the volume-up button as the shutter release (this is a long overdue feature), the lens is stupidly in the bottom right corner not top right or top left corners. So if you hold it in what I consider the 'normal' compact-camera way, your right ring finger will cover up the lens. To avoid that you have to use only your thumb and forefinger on your right hand, which makes it hard to hold steady.

That's a cool filter in your photo Jacqueline, what app is that from?