As yourself how long it took you to do the most similar thing you completed in the past and how long that took. Then without at all accounting for you being mor

As yourself how long it took you to do the most similar thing you completed in the past and how long that took. Then without at all accounting for you being more skilled or learned now, use that as a value. It sure beats the everliving shit out of every other estimation method I ever tried, including really extensive planning and prework.