In June's Jump back (previous post 1 0f 6 ) we have the beginning and the end but not the middle. The middle is lolasana and is the stage we need to pass through in both the Jump back and Crossed leg Jump through. David Swenson advises practicing Lolasana and it definitely made a difference.
I'd practice it any chance I got, sometimes during practice, a few times in the evening when I got home on the mat, but more often than not while watching something on TV. It's building arm, shoulder and core strength of course and also focusing on balance and shifting body weight, but perhaps best of all it's building confidence, you Begin to get used to the idea that you can suspend your body in the air. Now it's just a case of bringing them altogether and the subject of the next post on props.