I can't see him :-(

he is very faint, you might need to turn your brightness up. he is to the left of the Arietty, just to the left of the pillar.

took me 2 goes of trying with the photo to be able to see him at all in this snap!
He was hiding from me!

Turned my gamma up a bit and now I see him. I hope this means I have not missed any because my brightness was not great

You Might have! I play with my brightness all the way down to the lowest setting. I had missed a few and had to turn it up for the quest. I Did find them in the end!