License question

Hi everybody,
I’ve got a very specific question.

I’ve got a blog running with a CC Attribution-NonCommercial-ShareAlike 4.0 license (“if not statet otherwise”).
I want to publish circuits and in the FAQ I learned “First of all, you can do whatever you want with them.”

But as the exported images are watermarked (and of course the watermark will stay), I guess I have to name another license for them.

Am I right here? And which license and owner do I have to mention?