[a proper hooligan]

I've searched all of the forums and read through all of the diy's and struggled with it for at least an hour. Can any kind souls who have done this before lend me a hand? I've tried the screwdriver, tape, credit card, fishing line. Basically everything.

If not, does anyone know how much it would cost to get done in a shop or have any shop recs?

Thanks in advance.