1) Okay, again so how much "more" (on top of my usual refund) would my tax refund be if I used the standard deduction amount for my personal (material) donations, and if I'm in the 28% tax bracket?
2) So WHAT WOULD BE THE APPROXIMATE AMOUNT OF MY REFUND for a single individual if I used the standard deduction?? (This is the same question as question 1 just in case you didn't answer it AGAIN, because I actually didn't get an answer after asking it several times).
Thanks so much if I get a real answer.

No one can answer your question based on the information provided by you. We need your income and taxes withheld and your deductions.