bip77 Glacerose I think both images, HS and Daz, she seems to be looking straight at me, if I look at her eyes. The difference appears to be in the angle of the images. The HS one has a downward angle from the player's view, the Daz one has an upward angle. This can give the illusion of the Daz one being her looking down. I had the opposite impression, the HS one made me think she was looking up. While the Daz one seemed closer to straight on.
But looking at the character bios, Celeste is almost a foot shorter than the MC, so thinking about that the HS one seems more natural, assuming she isn't standing on a platform in that image. If I hadn't checked her height I wouldn't have thought anything of it.