As above, use your feet to counter yaw by use of rudder. Remember effects of controls, change of power cause yaw, and you are probably lookng inside far too much, fly attitude and pick a point to fly towards. It is a common problem which can cause problems on nav exercises as you climb to your cruising altitude whilst filling in plog etc then wonder why you are not going where you thought you were!
Try wearing thin soled shoes to feel the rudder.
And remember to have fun!