My hair is not long enough to put into a "regular" bun so I simply put my hair into a puff first and then grabbed random sections of hair, twirled it a little, then and used my Good Day Hair Pins on the ends (pinned upward into the hair to hide the pin) to pin each section in various directions until it all came together
It took several tries before I ended up liking it....I found that criss crossing the sections worked best....I had about 6 sections of hair total (2 on top, 2 on the sides & 2 of the bottom of my puff) ... I liked the style once I crossed the left to the right & pinned each section - vice versa ... I hope this makes sense!!
I did something similar w/ this bun - except I pinned all the sections towards the center instead of criss crossing to give it a rounded out appearance: