Don't exactly understand problem
However lets take as example Word Pad
Open Word Pad
At top left click down Arrow and click "Page Setup"
Now you can select paper size - select left & right margins - and select top & bottom margins - select portrait or landscape. At top of WORD Pad opening page, you can select "Center" each line of type.
You can do exactly same with WORD
I don't have WORD, so unable to give specifics, but is same for any word processing application.
Look for "Page Setup"
Please don't destroy your Epson wf-2750 printer. Great printer and will serve you well.