Open Blogger Layout
Click design in the top right corner, then select layout from the sidebar.
Add a Gadget
Select one of your Add a Gadget spots, where you want to add your Widget. The Blogger Gadget pop-up will appear.
Create HTML Gadget
Copy and paste this code into the Content box and save.
Save and View
Your YouTube Gallery has now been added to your Layout.
Click Save Arrangement, then click View Blog to set up the plugin on your live site.
View Blog to edit POWr YouTube Gallery
Click View Blog to go to the live, published Blogger site.
Find your new YouTube Gallery Widget. You will be able to see a blinking Edit Me sign, pointing to a Settings Icon .
Click on the Settings Icon to open the POWr Editor and begin editing your YouTube Gallery Widget.