Here is the condensed version: For the effective part; as for the profitable part that's up to each individual.You should write an Ebook or Book on How to Develop an Effective and Profitable Trading Plan.
Why are you trading; be very specific.
What are you trading; be very specific
Where are you entering your trade and why?
What is your position size and why?
Where are your exits.
Come up with every possible scenario that might happen and determine what you will do if that happens. (price moves up or down, price gaps, price is halted, power goes off, internet goes down, lose contact with you broker, anything else you can think of.)
For every point you make in your plan be able to answer Why.