No, its not allowed by law, you are confused.
You should cite the !sources of your art.
Your drawing is a reproduction of a photo portrait in another medium, meaning: its a derivative work from anothers artist' artwork, hence you should cite the source and credit the artist, and in this particular case since the photo is copyrighted you should obtain permission from the author to monetize said derivative work.

When posting content that either is owned by someone else or inspired by someone else’s works, it is proper to list the said source in your post with a link to the original.

Failing to do so is considered plagiarism, and could result in being blacklisted by curation groups or even flagged. 

#### Examples include:

 * Using another artist's original drawing/painting/digital art as a “study” or inspiration without linking the original and giving credit to the original artist.
* Linking to someone else’s YouTube video with no source.
* Using someone else’s photos or text without linking to the original source etc.

<center>**Please make sure you do so in the future, thank you.**</center>

If you understand the rules explained in this comment reply to this comment with *"I understand"*