Setup a backdrop support. This can be anything from a trifold board cut in half (the style you used in "school") or a custom design. I chose a custom design to conform it to my design spec and make the modifications I wanted.

Setup your white background. Once the backdrop is stable, minimize as many unsightly areas as possible. You are ready.

Take a few test photos (Optional). If you are unsure about the end result, take 1-2 test shots for review. Make adjustments until you are happy with the end result.