For the bhs:

1. don't throw your head back before you jump.
2. get your arms to your ears....at this point you can throw you head back...but only as fast as your arms are moving back. Notice how the head is always located between the arms in the image?
3. you are over rotating the 1st half of the flip because of the improper jump and the bend of the knees.
-you should land, on your hands, stretched out like a handstand with a slight arch. noticed the image with a dotted line through it. you are landing with your weight on the left side of the line instead of the right side of the line.
4. get off your hands quicker. This is called a block (rapid rebound from shoulders).
5. finish shape should be a rounded back (called a hollow). You are finishing in an arched back.
-fix this by trying to look down at the ground, about 3ft infront of you, when you land on your feet at the end.
**focus ont he proper head position at the 1st half (beginning----->jump) and getting your arms to your ears.