Test small before you build big.
Define the customer and the problem.
Write one sentence describing who you want to help and what becomes easier for them. Avoid starting with a long feature list.
Make a simple test.
Use a sample, a demonstration or a small service trial to understand demand. Ask questions about current habits and existing alternatives.
Set a limit.
Choose a time and spending limit for the experiment. Decide in advance what evidence would justify another step.
Review the result.
Look at feedback, delivery effort and costs together. Continue, simplify or stop based on what you learned.
Registration, insurance, taxes and licensing depend on your location and activity. Consult qualified local professionals for those decisions.
Check your basic costs