"While rendering the salute to the Texas Flag, a person should stand erect, face the Texas Flag and hold their right hand over the heart."
I think it has been changed, it "used" to be that you face the Texas flag and hold you hand out to where you elbo is at your side and our hand is out.
you put your hand over your heart just like in any other pledge
You put your right hand over your heart with the Pledge.
please show a picture of obama using right hand for the pledge of allegiance.
Right hand
your right hand, over your heart (left side of your body)
Proper procedure? Can either hand (left or right) be used when reciting the Pledge of Allegiance.
Place it on your chest where your heart is.
No, keeping your hand on your heart is showing that you have the same respect. 
it is honor to the flag
put your right hand over your heart and look at the flag
By putting your right hand over your heart and facing the American flag.
If you are wearing a hat, you should remove it while saying the pledge of allegiance. You should also stand, and place your right hand over your heart.