How long do blood blisters take to heal?

[Ponyup]

My tattoo removal caused nasty blood blisters. I am taking very good care of them so they don't scar, but i've never left anything alone, I tend to be a picker so I don't know if the healing I'm having is normal. They were nasty & blood filled for a week & then popped on thier own, now the skin seems to be drying up scabbing. Is all this normal, do any of you know? How long will it take for the dead blister skin to fall off? If you guys don't know that's okay, but I was just curious.