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You should only choose one community for each artwork/post. If you post it in several communities like this, it might be considered spamming which might result in downvotes.. if someone picks up your post and likes it, he/she might cross-post it to another community but you should only choose one community which is best for your post.

Can you share your post to other communities by cross-posting or is that considered something for the viewers of your blog post to do? Thanks for informing me.

Well, I personally wouldn't do it as some whales could downvote it to prevent spamming. If you are looking for the community which supports artists I would suggest you to post in OCD.

They appreciate artists and you could potentially be spotted by their curators. They however co-operate with other communities (you can find which ones on their discord).

I've heard somewhere that someone was suggesting to have the possibility to post to at least 3 communities at the same time but I don't know if this is something what is being worked on right now. I guess that people are focusing on the current situation of the blockchain instead of development at the moment. This is just my personal opinion :)

If I would spot some news I would let you know :)

Edit: Your artworks are great but you need to post some progress photos and then you might get noticed faster. The more time you and effort you invest into a post the higher the possibility that someone will notice it and support your work :)

Thanks, I will stick with OCD and yes you're right I try and post process photos but when sharing old artworks I didn't always take them so it's too late but it would show more of the journey. :)