Help me with my mechanics?

[DC_Ref12]

So, I've got some more church league games this weekend and want to spend these games focusing on mechanics. I think I've got the routine down for calling fouls: whistle, clenched fist, call color, number, signal type of foul to offending player, report to table, color/number/type again, signal shots or spot of throw in.

Is that right?

Also, some of the slang terms we use for fouls don't have actualy signals for them, so what do you use in these cases:

Illegal screen (push? PCF?)
Illegally fighting around the screen
Over the back (push again? or illegal use of hands)

Also, do you audibly call out the type of foul when you give the signal or do you just give it?

Thanks!