Please go to https://www.printables.com/model/961742-honeycomb-storage-wall-90-degree-corner-4-variants to find updated models as well as new variants.
My storage wall is partially standing on my desk and for that purpose I needed a 90 degree corner. This is an inner corner, which means that the back of the honeycomb storage wall (HSW) is on the outside of this corner.
This is a specific oriëntation of the HSW, so please check if this is the same orientation you've placed your wall parts.
Let me know in the comments if you'd like other variants, I'm happy to make them for you!
The author remixed this model.
Updated the description, new models available on https://www.printables.com/model/961742-honeycomb-storage-wall-90-degree-corner-4-variants