Recommended way of creating software

Inspired from some talks and books, here is the framework I would define

Part I

• Write some tests of the part of the feature you want to make
• Make the tests fail (duh! there is no code to pass it)
• Write minimum code to pass the test cases
• Refactor

Part II
From OOA & D book

• Make the software/feature do what the customer wants it to do
• Apply OO principles to add flexibility
• Strive for a maintainable & flexible design

From Part I and Part II, the point 1 would correlate with Part I, points 1 & 2, Part II points 2,3 would correlate with Part I point 3, the refactor phase.