How to shape dough to pizza with hand?

i can not shape it with hand?
my pizza shape is 6" 9" 12"
is there any different with 6" and 9"12"?

confused a lot,anyone can afford a video or instructor(step by step) with picture is perfect. :lol:

thank for everyone’s attention :wink:

If you are wanting to know how to toss dough here is a video
Here is one that shows the basics