Great start with new projects. I often add wire burned-in bands to turnings but had never thought about doing it to pens. I also like the thin cross sections of contrasting wood.  Those two additions would help when there is no "fancy" grain in the wood itself. 
 I have made many over the last 25 years or so but did not want to get into selling. Friends love to get them as gifts. I usually have a few in reserve for a last minute gift. I do find that older folks like the "fatter" pens as their fingers are getting stiff with age. 
Pens are also one of the first projects I have had my grandsons make.