Some of the webcam mounts I saw for the Ender 3 S1 were a bit specific in terms of the webcam of use. 

So this is somewhat of a remix from this thingiverse version which I printed and only after realised that even though our webcams look the same, they are not.

I just took a less elegant design approach. Slip the mount on the printer, get some zip ties and sandwich that thing on there. There's enough holes to put your zip ties through and should be big enough to accomadate any webcam.

There seems to be scaling issues when downloading the STL. I've no idea how that's happened but I don't have the originals so I can't really update it without re-doing the whole model. So if it happens to you, you can update the size such that it measures 150mm in the Y direction. There's an example in the post images. Apologies for this unprofessional mistake.