Child Shoot

The expression is fun and you caught it at the right moment. 
My critique would be that your lights are too high and the image seems slightly overexposed.  Her skin and hair are a little hot.  If you have control and shoot this child again you may choose a lighter backdrop and clothing.  Her hair and skin are very fair and lend themselves well to a softer look. 

The skin tones look pretty natural to me . . . although they are somewhat washed out.  The highlight on her is caused by the light being too close and/or too bright, not by how high it is.  Lowering the light, but keeping the same brightness and distance would only move the light (which by the way, doesn't bother me very much). 

There is nothing to indicate the purpose of this shoot.  If this is a child that you are close to, the "cuteness factor" overcomes the problems with the pose and lighting.  If this is a professional session the problems become more important.

The subject is centered and facing square into the camera.  The main light (on her left) is too high.  This is casting the shadow over her neck and right shoulder.  The light is harsh on her left and front and then the right, lower, side is too dark by comparison.  The harshness of the shadows makes me think that the umbrellas are pretty small. 

I would also suggest, generally, that images posted to this board should be about 500 or 600 pixels in the long side.  Small images are difficult to review in detail.

Ed

It is okay to have children square to the camera in the sense that you don't have to worry as much about flattering them.  However, I believe Ed's recommendation was to make the image more dynamic, less static.  I am assuming, so I will let him correct me if that is not the case.  I still think that short lighting benefits a lot of children's faces.

As for lowering the lights:  Take Ed's advice, he is much more knowledgeable.