This is the character sheet that I created for my Swords & Wizardry campaign. We've tested it and it has worked out pretty well so far. It even has a space to sketch your character! It's single sided and I created a US 8.5 X 11 version as well as an European A4. Feel free to download it and use in your game.
US 8.5 X 11
The trademark, “Swords & Wizardry,” is reserved as Product Identity and is used with permission from Mythmere Games. Swords & Wizardry Core Rules, Copyright 2008, Matthew J. Finch.