The steps are as follows: 1. Open Word, create a new document, and click File menu → Page Setup.

2. In the pop-up page setup dialog box, set the "Paper Size" item in the "Paper Size" tab to "Custom Size", and then enter the paper size as width "8.8cm" and height "5.5cm".

3. Click to switch to the "Margins" tab setting interface, and set the top, bottom, left, right margins, and gutter to the number "0".

Click the "OK" button to return to the Word editing state.

4. Enter your personal name, company name, address, contact number and other information, and adjust the font, size, color, etc. of each information.