Can I move armor stand legs up?

I’m trying to make an armor stand look like its flying with elytra, and I can’t seem to get it right. The command I’m using is:

/summon armor_stand ~ ~ ~ {NoBasePlate:1b,ShowArms:1b,Rotation:[53f],ArmorItems:[{},{},{},{}],HandItems:[{},{}],Pose:{Body:[38f,0f,0f],LeftLeg:[66f,0f,0f],RightLeg:[64f,0f,0f],LeftArm:[257f,0f,0f],RightArm:[253f,0f,0f]}}

But the legs are too far down and all I can do is rotate them :/ is there something I can add or another command that I can use? Thank you