Q- tips on sex standing up???

My boyfriend and I were out last night and decided to have sex, but it ended up being a serious struggle. We did the whole leaning against a wall while he hold my leg up, we tried me bending over in front of him, idk it just wasn't working very well. I was giggling a little bit to ease the awkwardness, and he said that even tho it was hard to do, he still enjoyed it.
Sooo it's not like he hated the whole thing, and he still was able to finish and all, but does anyone have tips on how to have sex standing up be a little bit easier??? Thanksss