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So instead you could for example post it in OCA and then use the cross-post feature to post it in GEMS/OCD as well.

very good and creative idea, thanks for your help/suggestion.

You posted this in GEMS, so people browsing gems may miss it cause there's so many posts there of all kinds. It's the same as if you posted it in OCD, sure it has a lot of subscribers but may not interest every one. Posting it in Onchainart though for instance will surely get you the right viewers and curators because the community is about art.