This picture works well because the background i sharp as the two figures are blurred. Alana being less blurred than Nipa causes attraction toward nipa who shows more excitement
This picture works well as a frozen image because it shows the doll being completely unattached to nipa and mid air.
Both are good examples. Nipa throwing the doll up has a funny contrast of scale as well between her and the doll. But you did not include the shutter speeds.