Answer:
Depends on the routine. As most lower level routines end in a flip where you really only have flexibility to be creative with your hands...
-Framing your smiling face
-One bent towards your chest while the other is straight
-In an "L" either vertically or horizontally
-One arm circling above your head, the other straight
-Both arms bent out vertically in front of you, one higher than the other
-Bending your arms so your hands spread out in front of your face