I did a personal use portraits mod for my self's amusement and my friends ask me to upload it up since others might enjoy it!

Installation:
1.Download .xnb file
2.Find your game where you intalled \Stardew Valley\Content\Portraits\
3.replace .xnb in "Portraits" Folder
4.Open game and see your new mod

​Visit me on DA or tumblr : )
http://saturnspace.deviantart.com/
http://comacoat.tumblr.com/