Before you analyze anything, make sure your sample is real. If your fills are wrong, fees are missing, or timezones are inconsistent, your conclusions will be noise dressed up as rigor.
Start with the last 5-7 days. A month sounds more scientific, but it usually becomes avoidance: you will never finish the review, so you never ship a constraint.
For each trade, capture four fields that make reviews operational: setup label, planned stop (invalidation), planned risk (in R), and one behavior tag (calm, tilted, FOMO, fatigue).
If you do not have the planned stop, add your best estimate from your entry thesis. You do not need perfection. You need consistency so your next review has comparable data.
If you use screenshots, keep it minimal: one annotated chart per trade type, not per trade. The review should be about patterns, not about collecting artifacts.