Just started straight shaving a few days ago. I am getting better around the jaw line but am still struggling with my chin and area under my lip. Any suggestions?

Also, I have a small bump under my jaw line which I have managed to shave off a couple of times

Forunately my razor, being sharpened by Lynn, went right throught it both times! No pain but drawing blood. Do most folks skip these areas or is there a technique I should know about.

Thanks