When you want to make your essay seem longer...
Do you prefer to make the font size slightly bigger, or make the margins slightly narrower? Typically increasing the font size by between .5 and 1 makes the paper longer without being too noticable, or increasing the margins by a very small amount works too. Or do you do a combination of the two? Or some other methods, such as making the periods bigger, having the spaces between lines slightly bigger (2.1 instead of double spaced) or inserting 3 spaces after a period instead of two?
Personally, I like to use Arial font size 12, which is bigger than Times New Roman 12, and the teachers don't care because Arial is a standard font. I've also increased the size of the punctuation marks and used 3 spaces instead of 2 after periods.