Hook left tricep to the outer front thigh, plant both hands to mat. Lengthen the spine. Shift forward creating a platform with 'chaturanga' arms. Lift one leg up and then the next. Keep the front leg where it is as you extend the back leg strait stretching from your hip, out through your foot.
Hug elbows in, as they have a tendency to splay. Keep shoulder heads back. Retract the head to connect to the core.