Missing 10-15' putts? Relax. Even a "short" shot needs a complete, smooth stroke. Don't let up just because it's not a 50-footer!
Step back about 2 steps (not full strides) and to the right just a little. Walk into the stroke, but do not step past to avoid the falling putt, as you transfer your momentum into the throwing motion, through to the disc. I don't want to "flick" the disc - open your hand fully - if you are musically inclined think "B Flat"! Pick a link and pitch it straight in
Longer putts outside 20+ you will not want to run so hard. Practice your regular stance, but don't rock your hips too much as you flow through the shot, or try a facing putt with an open stance, or a combination of the two. Aim to the right about a foot or less with a little hyzer, depending on the wind, maybe even higher than the chainset, and let the disc "finish" in the hole. Summed up like a fine wine... "With a smooth and graceful finish"
If you have too much hyzer, tip the nose up a bit to slow down the flight.
At any distance, if I feel the disc isn't coming out smooth I tell myself to quit "stabbing" at it and to let it go in!!