try to find and read up on.
Preparing an insurance loss estimate.
when you do one , call it that right on the 1st line.
You have to list each item or repair, the sq ft or lin ft of item.
the cost for each, labor & material .
then at bottom of estimate have a sub total , labor & material
then 10% fee for overhead
then 10% fee for profit
then depending on job size, add for permits, supervision, Porto john, etc. etc..
Once you get it figured out you'll understand what they want and it works smoother.
You'll also learn where you can cheat the numbesr higher to make
it more profitable. It's not easy money but it is money.