Previously, I had problems hosting my template images with photobucket. Instead of my template images, an images of photobucket that has a message "Upgrade to Pro today! Bandwidth Exceeded" was shown. I start searching for more information to this problem and found out that the problem with photobucket and many other free image hosting site is their bandwidth limitations, it means once you exceed a specific amount of bandwidth, your template images won't show.
Searching for solution is my main goal and Blogger Tricks provide me a solution with this problem.