Congrats! I don't think you need any advice. Just practice at this point. Not sure what equipment your using for lather. I would recommend heating up the bowl/mug before whipping up a lather. When I travel I use the palm of my hand to whip up a lather (or when I shave at the gym) so heating up the mug isn't an issue and I don't end up breaking the thing. I usually get warm lather from extra wet lather (i.e. oversaturated). I'm having a hard time picturing your arm in the way when shaving your right cheek. Angle is pretty important...lol. Again, congrats. Don't push the chin issue until you have a really sharp blade. Use the heel for chin shaving (less blade bend). The chin and other facial protrusions are dangerous places to shave, go easy, slow, and don't start the stroke on the protrusion itself.