Stubbed my pinky toe and now the nail has been lifted up off the nail bed, but is still attached at the base. what first aid procedure should i do?

Nail avulsion: Nail avulsions occur then the nail is detached from the matrix/bed beneath it. The existing nail is likely to fall off, and with time a new one should develop, although it's appearance may be altered. Treatment is supportive. Keeping the foot elevated, wrapping the toe in a bandage, cool compresses and pain medications are typically advised. Nail removal may be needed to prevent snagging.

Ouch...: If applying a temporary splintage to hold the nail on fails, then you will need to seek a specialist to finalize the avulsion procedure. Easily performed in the office, this might be the best way to handle the problem.