Absolutely I don't see it being a problem at all, men can do the same job and be just as successful nail painters as women, men can be just as punctual and creative as women at this specific job. I've never heard that a nail painter was bad at his job just because he is a male and not a female and I don't think that I will ever hear of it, and even if so the reason won't be his sex but his skills. Every man who wants to be a nail painter should go ahead and try it out and not let society judge him and put stereotypes on him just because of his own sex.