Deductions & credits

For my particular job, which is in roofing, I was required to travel between multiple job sites during any given day.  There was an office for my employer, however, I did majority of my work out of my own residence.   I would say, on average, that I spent approx 60% of my time traveling to and from or at a job site, 30% at home, and 10% in my employer's office.  I am not sure if this helps.  I did earn a small amount of 1099 income for commissions made on a roofing sale I had, however, it was only around $1700.