Installing your theme is easy to do, just follow the instructions below.
Go to the Theme Cloud download page and click the ‘Copy your theme code’ button. The theme code will get copied to your computers clipboard. If you're using an iPad or old browser you'll need to perform a manual copy (CTRL + C).
Login to your Tumblr dashboard then select which blog you wish to apply the theme to.
Select 'Customize theme'.
You might be shown some code or it may appear grey with some numbers on the left hand side. This is a Tumblr issue but we'll get around this.
Click anywhere in the grey area to the right of the numbers.
Press and hold the 'CTRL' button and whilst held down press the letter 'A' For Mac users the 'CTRl' key is called the 'Command' key.
Now press the delete key, all old code will be removed.
Click your cursor again anywhere in the grey area to the right of the numbers.
Press and hold the 'CTRL/Command' button and whilst held down press the letter 'V'.
Your new code has been pasted, now to update.
Press the 'Appearance' button followed by the 'Save' button.
To remove old settings and add the new ones press the 'Close' button.
You should be back on the dashboard page, select your blog followed by 'Customize theme'.
Your themes new controls should now be available, use the following guide to make your theme totally unique.