Hello Kaje62,
I do not know for sure but I suspect you are going about this the wrong way. To creat a custom template, using one of your own or one of Auctiva's that you wish to edit, you simply need to go to our
Custom Template Page or when you are signed in go to the "Listing" tab, on that page look under the Template section and their is a link marked "Create" this will take you to the same page.
Any ways you can paste your HTML in here. Make sure to name your template at the top. Switch to "Design Editor" and place the tags to the left where you want them to display inside the template. Then be sure to "Save". When you go to list an item you will be able to choose this custom template for your listing. To edit the template for change of texture, Background images, layouts, etc.... you may go to the
Manage Custom Template page and either create a new custom template or create a new template from an existing one. One last thing here is a useful string on more specifics to
Creating a Custom Template.