Got it!
Vegeta does the seals for the summoning technique while molding chakra, biting into his bottom lip drawing blood on his snake tattoo summoning a hand full of small Gardner snakes. As they run off, he does the same seals for the summoning molding even more chakra and using the same blood from the bite on the tat, and a larger snake the size of a python appears, turning and seemingly looking Vegeta in the eyes as it's tongues whips in and out, feeling Vegeta out before poofing away. Vegeta then molding lots and lots of chakra, more so than before, really going for it, he performs the seals for the summoning technique, releasing the chakra as the blood smears across the tattoo again, and a large snake 51 meters in length appears in a cloud of smoke, raising it's massive tail up and slamming the ground before leaning right in towards Vegeta, right up to his face where he eyeballs it, letting it know who's boss. Vegeta then tries once more, molding even more chakra than before, performing the same seals he bites down giving the seal fresh blood, releasing the molded chakra as a ginormous 100 meter long snake poofs into existence, it's mere presence being awe inspiring as it bares it's massive fangs, slamming it's huge tail a few times and shooting Vegeta a snide look, before also poofing away. Vegeta, exhausted from using so much chakra over and over, takes a rest and grabs some water, before coming back over to Korra...
I hope I did that right Sensai