As one who shops and buys on Poshmark, I recommend at least one photo where you didn't remove the background. Often times photos with the background removed can seem to alter the colors. Best of luck!
My 2 cents- we do a lot of share shows. Most people like the list of measurements in one picture. Mostly P2P & Length. Measure pants flat on the back, rise, & inseam. I hope this helps ❤.