stay small and go left to the sand castle, dance on the top platform, stay small and go to the things floating on the water and do some parkour towards the left, get on the boombox and wait for the song to finish, for the last one, go to the tutorial, there is a red zone where you destroy some cardboard, leave and go back before it closes itself, no need to do a new save, if you fail you can just try again, after you get back inside, go right and touch the glitched Viscas, that's it, btw by "stay small" it also means to don't hit anything