OK while doing the Frog Stand I have notice when I lean forward my arms really bends a lot and I know Coach Sommers saids that this is the only exercise with bent arms but mine bents around in a 90 degree angle. Here's how mine would like like.

And when I try to straighten my arms I would lean more backwards and fall on my feet. I want my arms to be more straighten out so I would actually build strength and not be cheating. Like this kid.

Also when I am in the Frog Stand I find it really hard to breathe in and out. Is that common? I usually have to stop because the breathing is hard making me concentrate less. Thanks for your help. God bless.