HOW TO INSTALL

Just drop the 'portraits' folder onto your bg2:ee main folder. Mine was located in:
C:\Program Files\BeamDog\Games\00783

Also, you can copy and paste 'portraits' folder directly onto Ipad, using Ifunbox to get access to BG2 folders. 
Go User applications, Baldurs gate 2, and then enter the 'library'. This is where you should copy the whole 'portraits' folder, AS A FOLDER.
Ifunbox no longer works with ios 8.3 so you need an old version of ios or wait for Ifunbox to update to new ios.

This should also work on Android, just drop the whole portraits folder to where it should.