I file my 1099 during the year of 2007 but I realized there are portions of expense I spent during 2007 is eligible to report for itemized deductible but I didn't file it in 2007 tax. Can I file this deductible amounts to my 2008 tax form? Also, my income for this year is lower than 2007, if I can file my expense of 2007 into my 2008 tax form the expense will be double, is that okay for me to do it?