small bonsai

This oak is very weird, I germinate a lot of acorns, and most of them sprout by april, this guy sprouted in may, he really took his time. When he germinated I pulled him out and saw no taproot, there were fine roots coming out of both ends of the acorn, haven't really seen anything like that...

Hello! These buds look the same since November, I had to put a frost blanket on it as we have extremely cold winters. Should I put it in a plastic bag now? P.s. I'm new to bonsai so please don't be too harsh on me, I know the wires and wiring is far from good.