im new n i have asked a lot of questions. im sorry. my snake is in blue now. before he looked like he had "dried snot" on his left nostril going to his upper jaw. he didnt show any signs of shedding yet. i also saw him rubbing his nose against the glass like it itched. so then i read about "rubbed nose" maybe it was the beginning of shedding and it started at his nose. is that how it normally starts?