Sketchfab models - download, add details! need to have models sharpened and made high poly. Add fine details

I am looking for a freelancer to help me with a project involving Sketchfab models. I want the freelancer to download the models and add details to make them more high poly. The models must be in STL format, and will need texturing for completion. The detail level required needs to be high in order for the project to be successful. If your skillset matches this requirement and you are interested in working on this project, please reach out to me.
For 3d printing, so model looks like the photo skin.
PRINT MUST BE ABLE TO LOOK LIKE ORIGINAL ITEM
Looking forward to hearing from you!