Charles is obligatory here, really. It may provoke
, and that leads to a possible ko in the corner after
. White can start it with a, but that's an unlikely play until White has some good threats.
For the present it seems that Black should be happy with the effect has already had on
. Next Black can play at b.
Black can now treat lightly, with
and
, if
cuts.
From the point of view of shape is a good attacking point. Black, however, still has many ways to play here.