By placing your left hand on the door sill you can use that to help stabilize your torso... then if need be use right hand place on steering wheel to help move the legs up and over the door sill.
once you find your own way it'll be a piece of cake. I picked my car up Friday afternoon and yes it was awkward getting out of it the first time but now I only used my left hand on the door sill and get myself out it's like second nature now.
I'm 5 11 and 245 pounds (or maybe more)