The one-click installs will take you to the Tumblr theme page with the preview and install link. The following instructions explain how to use the manual installs.
- Visit the Customize page (tumblr.com/customize). If you are customizing a secondary blog, click the gear icon on your dashboard, select the blog you want to edit, then click "Customize" next to "Theme."
- Click the "Edit HTML button that is located towards the top of the left options column.
- Copy in the theme code and click "Update Preview" then "Save."
- The changes may take a few minutes to show, but soon enough, your blog should be sporting a jazzy new theme from Atomic Affliction!