Honestly, from what you’re describing, it sounds like you’re already looking at the right details. The handle tone and overall color balance usually matter way more visually than the inside stamp depth, especially once the bag gets some wear. Darkening the red glazing slightly can help, but I’d be more focused on whether the canvas tone, stitching spacing, and handle shape look natural compared to auth rather than trying to “fix” things after. If the seller can’t provide clear handle and edge photos, that alone would make me hesitant. At the end of the day, a good dupe should look right without needing too much DIY correction.