Be honest: are you really adventurous in bed? Then lean back and prop yourself up using the palms of your hands.
Start slow, and then go faster.
For example, a 90-degree perpendicular angle of entry might not feel amazing for her… But using pillows or having her lower her head down could help bend her body so that you're entering from an angle she loves.
"Couples were able to be sexual from anywhere and explore something much less status quo than traditional sex.