Thanks - the whole canvas is much larger - this here is from the right side of it.
The actual canvas was black, but I isolated this piece and created a PING file with transparent background, so I actually can clone it on any color canvas - or on merchandise, such as T-Shirts (that is actually the plan for this one).
I pitched it to a few artists I had worked with before, but they are not into digital, so I have to find others that are.
A digital colab is much easier to do crossing borders. You don't need to send actual artwork back and forth (and through customs) but simply use https://wetransfer.com/ to send even gigantic files back and forth.
I hope it catches on with some other artists I am going to approach.
In fact, I had myself contributed to a Australian magazine one time, doing exactly that - the canvas was a meandering "exquisite corpse" that grew with every contributor in length. There are groups on DeviantArt like this https://www.deviantart.com/theexquisitecorpse and this https://www.deviantart.com/theexquisitecorpse