PlayerID57, when it comes to entertaining viewers, its all about how you act.
From how you respond, your general mood, if you have any reoccurring moments etc...
Everyone plays and acts differently, and everybody has their own preferred person or style, from being generally relaxed/lazy, enthusiastic, "random", for a few examples. The best way to find out is to experiment with different sessions of recording or streaming, and finding out what you believe is best. Its up to you to find out what makes you the happiest when it comes to it, and its better not to make yourself act the way that gets the most views as it would just become more of a chore in the end rather than something fun.
Overall, find out what you find is the best way to act, be yourself, and do it for fun rather than doing it for views, or it becomes a bother to do such things.