first of all Welcome to YT to you and your new baby whose name is???
and we love pixs so we hope to see some real soon!!!
Join the club on the nipping and jumping!! Mine is 9 months old and he still does it nipping at my ankles, growling etc until i say no sternly and give him his chew toy instead!!! He did get a little out of hand today when I took some paper out of his mouth and he wanted to get really nasty and growling and tried to bite me so he immediatley went into time out with a stern no for about a half hour and i believe he got the message!!
Just be firm with him and give him his toys to play with instead of nipping on you!! Good luck and I am sure you will get some great ideas from other seasoned yorkie owners here..also check the training forum for some tips too!!!