Okay you can get a child credit this year up to 4050 and I only got 1999 which means not enough. I don't see how your getting my calculation are  up to zero in which gives me not even half of my child tax credit. I want an answer as in explained how this is thanks.

The dependent exemption of $4,050 per child and the Child Tax Credit of a maximum of $1,000 per child are two completely different things and they are not related to each other in any way. The dependent exemption reduces your tax by reducing your taxable income, it is not an amount that you get back. The Child Tax Credit reduces your tax directly, but you get only enough child tax credit to reduce your tax to zero. Once your tax is zero you do  not get any more child tax credit. Neither the dependent exemption not the child tax credit is an amount that you get back all they do is reduce your tax.