Foam after the nut, before the bridge. How large ?

[Plendakor]

.

 

[FIXXXER]

pretty ok, i do it the same way. for the saddle i use this (tesla vibration damper) though...

 

[hurdy]

Move the foam closer to the body string holes (away from the bridge)
I think your bridge is the wrong way around, unless you did that on purpose.
I used to have the bridge on backwards and it would cause the saddles to move when tuning (fucking up intonation)

 

[Strachan of D]

if the screws are facing the neck the bridge is on the right way.

 

[Keregioz]

Seems fine to me. As long as the foam is touching the strings to keep them from vibrating you should be ok.

 

[hurdy]

if the screws are facing the neck the bridge is on the right way.

Yea, I think you are partially correct.
However, I have seen new guitars with screws in the opposite position of what you have said.
I don't think it really matters as long as you don't get intonation issues.