Need Some Tips

The boyfriend and I can’t seem to really nail or get into the standing position. He’s 5’8 and I’m just under 5’4 so that in itself is an issue for this. I am also on the heavier side so I HIGHLY doubt him holding me even with my back to the wall or whatever would do any good because he wouldn’t be able to hold me up long enough to get anything done lol. We have somewhat successfully gotten the stand up version of doggy style but that’s it.

Thoughts? Tips/New Positions are very much appreciated!