She's precious!
You are welcome to do Zosimos and K.A.R.A. if you like! I don't have any references for them other than the ones I used in their bios though. I will answer any questions you might have with descriptive info.
Any descriptive info would be great, especially potential differences between imagined design vs the found art used.
Zosimos will especially be a treat to design! The reference you use for him has a lot of interesting elements I'd love to play around with. K.A.R.A would also be fun to play with; I haven't drawn especially robotic characters before!
For Zosimos, I based the character on the picture instead of the other way around, so I don't have any differences between his imagined design vs. the art.
Sakhmetneferu looks similar to this,
but without the translucent blue elements. She has a regular panther tail and paws. She is ivory white with softly-glowing pupil-less blue eyes. If you like, you can add gold line accents with an Art Deco style to her body, using the line art on Zosimos' headdress and pauldron as a basis. I haven't mentioned such accents in her descriptions in the RP yet, but if you decide to add them and they come out looking cool, they'll become canon.
You are free not to add them if you think a sleek, unadorned form works better artistically.
The dragonfly cybertulpas are the same color as Sakhmetneferu and would have the same sort of gold accents as Sakhmetneferu (if you use them in her picture), with translucent veined wings. They would look much like normal dragonflies, but with the same kind of sleek, minimalist aesthetic Sakhmetneferu has. They are the size of normal dragonflies. You don't need to include them in your artwork if you don't want to, since they do not have sophisticated personality algorithms.
If you have any other questions, please don't hesitate to ask.
K.A.R.A. looks like her picture. If you have any questions about her, I'll put them to ChatGPT and see what it says.