I think your first render with the stars and juice is the best one because it looks more like an ad you’d find in a mall or something. Also the yellow contrasting color helps breakup the uniformity.
A few small tweaks might help you out here. Sharpen skin reflections a little to make her glow a bit. Primarily around the nose, cheeks, and shoulders. From the looks of it, I think you use alpha clip for your hair. I find that using alpha hashed gave me the best results since it gives the illusion of softer looking hair. You added a stronger catch light for the eyes, which is great! But the squint coming from the lower lid is so high that it’s convex-ing. At most, the lower lid moves up to a point where it nearly straightens out.
One last note that you already figured out, I would avoid low angle shots. Generally, they are unappealing (if you’ve ever done face time with someone on their phone, you’d probably know what I’m talking about since the camera is almost always aimed straight into their nose). Try camera angles at either eye level or slightly high angle shots.