Can someone please clarify if I can add my own watermark to my work?

[f76f6e39]

Blessings.

I attempted to create a project on Upwork, but at the end of the process, a checklist appeared regarding watermarks, which worried me. There is a lot of unauthorized selling of artist's work on the internet. To protect my work, I've added a watermark. Can someone please clarify if I can add my own watermark to my work? These are simply examples of my previous work that I'm presenting to clients. The message that popped up has made me apprehensive about submitting my project.

[e03299a8]

you may upload with low resolution