One more point - for hand held images it is usually better to select a shutter speed of 1/focal length. So, for 210mm your shutter speed should be 1/210 or faster. That helps to cut down on camera shake caused by unsteady hands. Believe me, I know because my arthritic hands make it difficult for me to hold a camera steady for any length of time. Keep at it.

BTW, if you check my signature below this message then you'll see I have those exact same lenses. Nothing wrong with them. Don't spend more money chasing better images until you can confidently use the ones you've got and have an idea what direction you want your photography to take. Hope that helps.