Just a quick little story about our baby girls blessing day. We finalized on a Friday... had the Temple sealing on Saturday and had her blessed on Sunday. She slept through the sealing which was the most amazing experience right up there with my DH and my own sealing if not even more special.
Well, my DH was also itching from the day she was born to bless her. She was 6 months old for the blessing and it it VERY different blessing a 6 Month old than a 6 week old. There was a deacon holding the microphone for my husband and Ella (dd) happened to get ahold of the cord. She would yank it away from the deacon and he would pull back. Everytime it would smack DH in the chin... over and over and over throughout the whole blessing. DH never missed a beat though

and it was such a wonderful experience and a beautiful day.
Good Luck!
Here is a Pic. of Ella on her blessing day!