EDIT: Installing journal skins is now a one click process. Simply click on the Install to Journal button and you will be redirected to your journal entry page with your shiny new skin already in place. Awesomes.I will edit the tutorial with this update shortly. ^^
This tutorial will hopefully help you get started with installing and editing journal skins. It has been made for the Sweet Vintage skin but can be applied to other skins too.
Suitable for beginners and those of you with some knowledge of CSS.