hello folks in the DB section! this is my first post in the DB section, so please, be easy on me! anyways, i really want to join my university's jazz band, so in preparation, i am taking DB lessons. anyways, on to my question, my teacher is having me start with the bow, and i don't know what i am doing wrong, but my thumb really hurts after about ten minutes of bowing...is this normal or am i doing something wrong? also, i am having a heck of a time trying to bow without pushing the bow down hard on the strings...does anybody have any bowing tips?