Editable Word Letterhead Recreation

I already drafted the entire letterhead layout with ChatGPT-generated visuals and copy; now I just need it rebuilt properly in Microsoft Word so every element—logo placeholder, text blocks, margins, colours and footer details—can be edited at any time without breaking the layout... (Budget: £10 - £20 GBP, Jobs: Adobe Creative Suite, Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Graphic Design, Microsoft Word, Photoshop, Word)