add whoever you want!!
also, if you in this studio, invite your followers, and if you like the studio, plz follow it! So it can become really popular and it can be trending!
you do not only have to do totoro, you can also do other Studio Ghibli stuff too!
I know this is not the coolest news, but if you search "totoro" in the scratch search box, this studio is number 1 on trending!