The OCD in me wants center girl to have her mouth open too. But it’s not really terrible since she IS middle. I will say is for me my eye first goes to the center picture, and I don’t think it’s the strongest there. I don’t know if anyone will agree about sitting in the middle though.
I like the 4th girl as her contrast, warmth, and general lighting seem better. If not originally used I would try fixing the photos as raw and then when ready do the re-size last paying attention to constraints. I like the 5th girl but my own tastes would rather see the image a bit warmer. It’s easy to say things but I will say that picking, setting, color, warmth, etc for the panel is a difficult task. I’ve done some myself and overall I’m not happy with them for one reason or another, composition differences between the photos maybe. I think 1, 3, 5 are a little too washed in some areas (but that’s my own taste and you or others may not share that view).