artists_beware | Advice on commissions and references?

EDIT: I just want to say thank you everyone for your input! I've gained some new ideas and insight on referencing and will be using new methods to do so. I apologize if I am unable to reply to every comment on here, but I really appreciate the discussion and the ideas that have been presented.

Hi, this has probably been asked before, but I really wanted to ask people who have had experience in the commission field. I've been really on the fence about this and want some confirmation.

Recently I had a commissioner who gave me complete artistic freedom over their commission. Their character made me think of a dynamic pose, so I went on a pose referencing site and referenced it for the commission- absolutely no tracing or copying was involved. It was a photograph of a live model used from a site called pixelovely I believe, used to practice figure drawing. It was just referenced with the naked eye, and the pictures- my sketch, and the referenced pose- do not match up at all. I'm not good with dynamic poses, so that's why I used a reference. I wanted to get everything right and give the commissioner a good quality commission as advertised.

When the sketch stage of the commission was finished, I linked them both the sketch AND the referenced photograph, so they could be made aware of what I did, and they seemed to be perfectly okay with that and were very happy with how the commission was turning out. However if the commissioner were to have been uneasy with the use of a reference I would have redrawn the sketch free of charge because I wasn't sure.

Is referencing (NOT tracing, but actual referencing) for the sake of getting something right an okay thing to do with commissions? I just do not know, because you're being paid for the work, and I usually get the idea that most people would want you to come up with your own poses entirely. I've seen a lot of folks say that this is not a Good Thing to do, but a lot of times tracing was involved in an attempt to pass it off as referencing. This might seem like a no-brainer, but I'd rather be safe than sorry. What are your thoughts?

(If I word anything badly, please tell me and I'll do my best to clarify! English is not my first language.)