It’s pretty straight forward but if you want I can make a longer tutorial on how to install it. All you have to do is go to customize theme then go to edit html, erase everything that’s in there, then just copy the code I gave out and paste it in the custom html box and then click update preview and there you go. You can also edit the colours in appearances and add background or sidebar image. Sometimes the colours of your previous theme are still there so all you have to do is click reset to default appearances under the appearance section. Please not that with the new customize the live preview doesn’t work properly. So when you’ve done save the coding just refresh the page.