A few thoughts:

feels like a rather big move to tenuki to me. I certainly wouldn't tenuki this without the stone at S3. (Actually, in response to

, I would have immediately played R3.)

is the wrong idea. Kick at P17, and deny white access to the corner, and he will find it difficult to make a base because of the stone at K16. Similarly with

(though C3 is okay). At

I would hane to continue to attack the group (and make 5th line territory!).

: H17 applies more pressure. It's not a trivial fight, but white should either die or give you a lot of thickness.

gave you bad shape.

is bad.

: don't contest a stone - kill the F3 group!

at B5 (then A5, B3, A4, A2 threatens life in the corner, and after white B1 prevents it, D1 makes a ko for the white group on the outside - via white E1, C1, F2, E2, E3, G1 if I haven't misread, because anything else looks like white suicide - but either way, you should try!).