British aircraft have a hard-edged camouflage. Getting those hard edges in the proper position is difficult. How do you make that hard edge? If you are like me you’ll be using the Eduard masks. They are made of highly flexible Kabuki tape. This set includes two large masking sheets. One for the fuselage and tail surfaces, and the other for the wings.
How do you know if you need Scheme A or B? The only real way to know is to look at photos of the real aircraft. It has been postulated that even serial numbered aircraft had scheme A and odd serial numbered aircraft had scheme B. This is not always correct. It seems to me more of a guideline than a rule.