Invoice Protection & Re-design

I have two invoices, built in MS Word, that need to be revised in such a way that everything on the invoice is protected except the fillable fields for name, address, amount, etc. The final product should be in pdf format so that I can easily email it to my agents who can fill it online and then save it to their personal computers and then send me a pdf copy. The attached files are in jpg but I also have MS Word versions which I was unable to upload for some reason as these have docx file types.