Well my guess on how this episode would work would be like this in 3 parts
1: Lincoln keeps trying to make a photo, but all those times they failed
2: Lincoln ether gives up or photoshop one of the photos, which piss off their sisters
3: Lincoln feels bad about being picky, gives one of the bad photos to his parents as a gift cause he likes it just the way it is, and their sisters hug it out
how's that, am I in the ballpark?