Even though I really doubt Super Sonic would ever be seen using that DBZ attack, I will say that you got the hand placement of that attack wrong. It's suppose to be one hand over the other, not both hands next to each other. This pic illustates the proper hand placement: [link]
In all respect, it's not really a kamehameha. The only reason I named it that is because it the attack it looks the most like. Because lets face it, theres not many other poses you could put a beam shooting from the hand in. :B
Okay, I'll give you the hand position thing, but naming the attack? Come on man, it doesn't take long to be original, even if its corny. "Super Sonic Hyper Beam" would be more original than Kamehameha.