I always write under a different last name (my grandmother's maiden name) -- it's just something I started doing 3 years ago, and kept with. My question is, when handling the business side of writing, should you go by the legal name or the pen name? For instance, I'm applying to a lot of writing internships/programs that require writing samples. On the application, I would think I should write my legal name, but then my writing samples are under my writing name, and I don't want to cause any sort of confusion on their end, as it would only give anyone a reason not to want to do business with me. So, is it best to just write under my legal name until I get established and have credibility? Any advice/suggestions would be helpful.