How to make word to print the header picture from the edge of the page

Solution 1:

Most consumer-level printers cannot print right to the edge (aka Full Bleed).

In most cases you'll need a printer that can print a larger page than you want to use, and then you design and print it as if it's on the larger size paper, but then force it to print to the smaller paper size. Even then, the leading edge (the top edge usually) border is tough to deal with, as many printers need the border edge to grab and hold the page while the printing is happening.

Often professional (digital) print shops will accomplish Bleeds by just printing to the larger size paper and then trimming/cutting the pages down to the size they want, eliminating any empty margins (perhaps check out What are crop marks and why would you want to print them?).