What was once lost has been found again! These templates were created by DreamRebel, whoever that is. Make sure you credit them when you re-upload these. I stumbled on these templates online.

https://www.dropbox.com/s/bnmwchp21gasqgt/Su-35S%20Flanker%20E%20%5Btemplate%5D.rar?dl=0

I advise the mod maker to make any necessary tweaks to this template that they see fit. For example, there is no layer for telling where decals like emblems should go, so it's a little unintuitive for use, but still, having this file at all is better than nothing.

I hope they make some more skins for their mod in the future. If not, the community now has the capacity to do so!