The only thing that would truly make these 'professional' quality is someone's willingness to pay for them. They're not bad at all, in fact a step above many of the infant images we see here, but just for giggles, I'll offer a couple of points for improvement.
1. Nothing helps sell a family portrait shot more than expression, and in this case the expression looks to me like it's just short of a temper-tantrum. It may not be, but the flat mouth just doesn't have the happy infant smile that we see in #2. Good lighting and good posing.
2. Nice expression here, but her left sleeve is partially obscuring her mouthWatch these little details when you're posing subjects. Also, the bakcground here is rather distracting; there are several colours, and lines, all of which detract somewhat from the subject.
3. I suspect that this would work better if we could either see more of the child, or less, but the 'bit' of right hand we see in the upper left gives the impression of a compositional 'oops'.
4. I think this would have worked much better in a different setting. What relevance does the chesterfield have? Perhaps in the nursery with children's toys and furnishings softly focused in the background?
Just my $00.02 worth - your mileage may vary.
~John
