I wonder if you are familiar with WORD? Because your question involves specific operations, I can't explain it clearly to you. Let me give you a rough outline.

1. Type all the text of the contract according to the draft format.

2. For the parts to be filled in, such as customer name, signing time, payment method, etc., use the underline in WORD to blank out the corresponding positions.

3. When filling in the electronic version of the contract, filling in the remaining parts will cause some changes in the format of the original version. Make appropriate adjustments.

I wonder if I can help you?