Before anything, this question may have been asked already, but I can't find it. I want to place a picture right on top of the page letting no white space between the top edge of the page and the top edge of the picture. I have already fitted the picture width to the paper width like this:
\makebox[\textwidth]{\includegraphics[width=\paperwidth]{mypicture}}
Thanks for all and sorry about my spelling.

