[Him]

I think that's fine if you're tracing to learn. But what I find unacceptable is if you post that traced art and you claim it as your own. If you're tracing to practice, there isn't really a need to post it unless you want to show others that you're improving but even then you should credit the artist that you traced from so people can see their art and that you're not ripping off the artist because some people make money like this and it's not fair to them.