Here’s a clever technique for analysing sales letters that came up in the Copy Chief forum (hat tip Stephen Carter):
Copy and paste the sales letter into Google Docs (or Word, or whatever).
Then in BLOCK CAPITALS write what the copywriter is trying to do in each paragraph.
Do this enough times and you start to notice how copywriters follow the same pattern in every sales letter they write (more or less).
Then if you copy out the BLOCK CAPITAL sections into another doc you have the skeleton for a sales letter in the same niche.
Before writing ANY sales letter, find at least 5 high performing sales letters on that topic. Repeat this exercise for each sales letter then combine the best elements of each to put yourself on the right tracks towards a winning promo.