new here just had BCC removed

hello, just had surgey on left cheek removing basel cell, it looks like the scar will be from corner of eye down side of nose to chin.i was told 2% chance it will return.  I'm  fair skin blue eye and dont lay in sun just turned 59..i fear i have more on my back.my question is i was told should wear hat and sunglasses. recommed hats with sun blocker in them are these any good?  any suggestion on prevention for my face?

thanks