What you describe is called "revenge porn" and it's a crime. See https://www.texastribune.org/2021/05/26/texas-court-revenge-porn-law/ If you...

The principles of trademark law and unfair competition would be applicable. These are fields within the area of intellectual property. Your...

Well, you can argue with whoever sent the Cease and Desist letter, or you can level the playing field by bringing in a lawyer on your...

You say that you created an art pattern which you embodied in a virtual product on the IMVU virtual world. Probably your pattern would be...

I've recategorized the question to increase the likelihood that it will be answered by an attorney with pertinent expertise.

No. The First Amendment applies to governmental action. YouTube (Alphabet) is not a government agency

Depending on the facts, this might be a violation of your state's law prohibiting "revenge porn." See...

I've recategorized this question to increase the likelihood that your question will be answered by an attorney with pertinent expertise.

What you say about the transaction is unclear and maybe self-contradictory. And how come "your research" of years ago might be implicated. ...

I've recategorized this question to increase the likelihood that your question will be answered by an attorney with pertinent expertise.