I just answered a very similar question today for a Pilates instructor. Feel free to read my response by clicking this link: http://www.ideafit.com/answers/how-much-does-a-pilates-instructor-make
I’d recommend you pay particular attention to the questions I asked in that link’s response. If you don’t mind me asking, what are your answers?
Also, could you clarify what you mean by “nutrition plans?” Are you a registered dietitian/licensed dietitian? If not, how specific would these “plans” be while staying in your scope of practice?
You can find additional information from past questions submitted in the “Related Questions” section of this page’s sidebar – check some of them out if you’ve got the time.
Hope to hear back from you soon!