What To Do To Make The Blister On Thumb Heal Faster?

I am fifteen, 5'2", and I weigh 125lbs. I got a blister on my thumb and the skin ripped off and left a huge gap, kind of like the size of a peanut when it's out of it's shell. It ripped pretty deep, considering that I can see the top layer and bottom layer 'step'. I've been putting neosporin and band-aids on it because it hurts to have anything touch it, and air starts to irritate it after a minute or two. What do I do? And how do I make it heal faster? It's hurting when I write, and I write daily.