Suitable avenues (repositories) for self-publishing own figures (illustrations) under CC-BY-NC-ND prior to journal's final acceptance
I have yet to use either myself, but here are two sites to look into. Both allow publishing images/figures, and can assign them DOIs.


Zenodo seems like a good option, associated with CERN and the OpenAIRE project, and open to all fields. It also supports a wide range of licenses. Indeed, when uploading a figure under Open Access, there is a search field to pick a license. One choice is "Creative Commons Attribution-NonCommercial-NoDerivatives", but it's not clear if this is the 4.0 version or not, as other licenses have 4.0 as part of their name (e.g. "Creative Commons Attribution-NonCommercial 4.0)".
Figshare is the more well known option, but it has only limited options when it comes to licensing. When I try uploading a figure on a personal account, the only Creative Commons license available is CC BY 4.0. An institutional user can also use the CC BY-NC-ND 4.0 license, however.