After you file

The W-4 you filled in and handed to the employer will determine how much if any taxes are withheld based on the gross paycheck.   The new W-4 form put in place a couple of years ago tries to get the bottom line of the return to zero.  If you want more withheld then you need to adjust the W-4 form ... start by choosing the SINGLE/MFS box if you have not yet done so.  AND/OR reduce the number of kids in step 3.   AND/OR  add an amount to line 4C of your choosing.   

You can also use the worksheets for the W-4  if you wish : 

https://www.irs.gov/pub/irs-pdf/fw4.pdf