Help adding a cell layer

Hi! I’m making this image for a biomedical article and I have a problem: I have to create a flat cell layer that cover the surface into the red circle (more or less like the example in blue) but I really don’t know how to do it… can anyone help me? :spin:

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you could simply retopo it onto the surface
but make certain it is subdivided enough to get clean retopo

happy bl

Take a look at the Skin Modifier:
https://www.blender.org/manual/modeling/modifiers/generate/skin.html

It’s not quite clear what should look like mentioned “cell layer”
however you could try using cell fracture modifier on a copy of the mesh part where you’d need cells or use shrinkwrap mod on pre-made and proportionally formed before ‘cell layer’ mesh you then add solidify or extrude along normals.
http://www.pasteall.org/pic/show.php?id=103911