No problem at all!
I am learning ZBrush myself (I have always been artistic; airbrushing, oil painting, pencil & pastel drawing; but it all became too painful as I have a nerve/muscle disorder that is degenerative and incurable. Which is why I decided to go digital some 5 -6 years ago.) and I really appreciate all of the advice, tutorials, etc other artists provide for free or at very little cost; this is my way of contributing back.
Some artists don’t like my advice and that’s fine; I seem to have been able to “pick my targets” pretty well as most, like you, have taken it the way it was intended - constructively.
The instant I saw your sculpt, I was reminded of Robinson (my pet octopus); same shape and texture; perhaps a bit lighter than Robinson was at rest, but it looked like the real thing (and I’ve seen many, many octopi in my life).
It’s a pity I can’t upload an image or two of her as all photos were taken back in the days of film and I can’t find them (at least I know where all of my digital photos are!).
Oh, and in case you didn’t know; your octopus is a girl (Males have no suckers for the last third of their third tentacle, counting from the right. It has a groove via which “octo-sperm” travels. He then places that lower third of that tentacle into the female’s mantle cavity for reproduction…).
So now you know all about the birds and the bees and the… octopi…