Deductions & credits

The student loan interest, HSA, interest and dividend income are not itemized deductions.  You have to enter those.  

Itemized deductions are things like Medical, Gifts to Charity, State Income Taxes Paid, Mortgage Interest, Property Taxes, Car registration fees, etc.  To itemize your deductions you use Schedule A.  Here's a blank one…
<a rel="nofollow" target="_blank" href="http://www.irs.gov/pub/irs-pdf/f1040sa.pdf">http://www.irs.gov/pub/irs-pdf/f1040sa.pdf</a>