adding more to my line of stuff i do

I already do henna, glitter and colorini... I have been a HUGE face painting fan... I have been finding myself spending a LOT of time watching videos on youtube of face painting how tos... anyways so I was wondering would it be wrong of me to add face painting even though I know some of the shows I go too have face painters (some times nothing more than some teen doing something very simple). however here is what I was thinking... I don't want to do the super hero's or anything else trademarked like that... I have zero interest in them... what I do want to do is stuff I come up with or animals, or designs or fun stuff... I know of two face painters in my state who are really good and am friends with them... I don't want to do parties or anything... just add a line of face painting to my already doing stuff... and I want to keep my set up really simple and if they are at the shows I plan on being at, I would never do the face paint there...

would this be okay or would I be stepping on their toes? but I would never do it at any show where they would be... I am kinda more interested in the body painting part but using face paint to do it... making some fun fake tattoos that can be wiped away...

How about we the face painters who want to do henna?? I think face painting would be a great complement for your business, usually you do one or the other anyway at events, the only problem is there is no way you can keep simply kit with face painting, I know awesome henna artist that had become great face painters, and I think that is because henna is harder.