80: Colour and style Q&A: Why you need the right value contrast in your portrait area? How can a scarf make or break an outfit with its proportions? How to ombre dye a garment?

Do you have to always repeat your value contrast in your portrait area? How about if you don’t want to wear a jacket because it’s summer?
How can a scarf make or break an outfit with its proportions?
How to ombre dye a garment?
Should I just buy white clothes and dye them because it’s so hard to find what I want in the colours I want?