@Cameron Riley
Your sweat equity has a value that you would be paying to a contractor if you didn’t do it yourself. You need to supply a detailed breakdown of how the security deposit was used to fixed up the place after tenant moved out. Give yourself and hourly rate and break down each item with a labor and material cost. I recommend an hourly rate from $35-50 an hour. I use $50 hr when I bill things back. As an example my turnovers always include replacing damaged window blinds.
I charge 15min per blind labor and the actual cost of the blind $8-12.
Don’t cut yourself short, it takes time to evaluate the turnover repairs, pickup all materials and install the materials before you can move a new tenant in. When you have such a detailed breakdown and are called into court, no judge argues that it’s not fair to the tenant if you have been reasonable. Just make sure you aren’t trying to bill for normal wear and tear items. Having a list of items and the basics of what you charge at move out will help tenants understand it will be in their best interest to leave you rental in good shape when they move out.