So, at the other end of the spectrum is the little guy. I've certainly been the smallest person in training and understand this position fairly well.
The big guy doesn't get punished for making mistakes as often, so he can feel more comfortable trying out new moves, however the little guy gets punished each and every time he makes a mistake.
Initially, this is frustrating to no end (and is the reason why a lot of people quit). However, in the long run, this helps the little guy/girl develop a game that is highly technical that will work on any opponent of any size (given a big enough skill gap of course).
Here is a video of Rubens Cobrinha Charles, one of the all time greatest lightweights .