I have a similar a-finger shape/structure and 'hooked' nail, and would suggest the following approach:
1. Overall approach - the appropriate shape for this shape of nail (or perhaps for any sort) is best determined when looking at your right hand from the 'underside'. Hold your hand with your palm up, and your fingers straight. It's best if you do this with some light behind your hand, so the nails are clearly visible. Your nails should appear to just peek over the tops of your fingers. If your rounded finger tip were the top of a clock dial, your nail should just about start to be visible as it rises out of 2 o'clock. Any longer than that and the hooked shape becomes more of a problem to deal with - this is, after all, an exercise in 3-D design.
2. Fine tuning your 'ramp' - given that most hooked nails hook in the centre, you're going to have to have a shorter ramp than you would with a straight nail, if you're looking for that clean flesh + nail release. So once you've got your overall length sorted out (and shortened, I suspect), shorten your ramp so that it gives out just past the middle of your nail - the greater the curvature of the nail, the closer to the middle your release point should be. With a very curly nail, I find just past the centre is perfect for me (so the string travels over just a little beyond half of my fingertip. Less than halfway = too much flesh, more than halfway = too much nail). In shortening the length of the nail ramp, you may find it useful to also flatten the angle of the ramp - I find that especially useful in eliminating the tip of the hook, that otherwise snags on the string.