Alkenes GCSE CONFUSED

Hi,
I'm confused because all the diagrams of propene are as below

H H
| |
C=C--C--H
| | |
H H H


can there not be 2 hydrogen bonds on the right hand side double bonded carbon?

H H H
| | |
C=C--C
| | |
H H H can you not draw it like this?

Just remember that Carbon makes 4 bonds. Thence it can only make a double bond with another carbon, and then 2 other hydrogens. (in the middle of an alkene branch). In your bottom diagram, your carbon is making 5.