Making WHMCS client area looks like my site

Hello guys,

I have been following this tutorial

http://www.youtube.com/watch?feature...&v=YbYkZSWymsk

to merge or make the default whmce theme looks like my site e.g. the header and the footer and although I have followed and double checked I did everything correctly, its just not working. Any idea what I could be doing wrong.

thanks.