Ive ripped my small toenail and skin,
To say its painful would be an understatement.....
Apart from a plaster, is there anything else that I can do to help its healing?
Only a minor injury but painful nevertheless.
This (US) link seems to cover all of the options. (It's a highly reputable site. Note that the link goes to the first of two pages, so remember to click through to read the whole article):
https://www.webmd.com/first-aid/broken-toenail-falling-off#1