So confused - deductions

I only had 3 places with 1099 Misc income for a total of $572, one being only $16, BUT adding that whopping $16 changed $0 owed to $3 owed (I don't want to send a check or use a credit card for $3 lousy dollars). Literally changing it by a few dollars made it $0 again but I obviously have to put in all my 1099 Misc income. I also added my property tax which then told me I had "maxed out" at the $10,000 deduction so that NONE of my other deductions seem to matter. Why can't I put in more deductions? And is there anything I can add, change, etc?