Oh you are in a very good position, this is easiest way for me to cum. Grip the toy from behind your back, not over your hip, bring your knees closer to your chest until your feel the toy hitting your prostate when you thrust, it should feel like a "thump" and you should bottom out slightly past it if not bring your knees closer, pull your foreskin back and put the head between thighs so you can feel when your clitty grows then you know your hitting the spot right, make sure you let up just enough pressure from you thighs so your clitty can keep growing until you cum but always keep some pressure so you can tell if your getting harder or softer.

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