I would like some help homing in on the last few bandages I need, but I don't want a step-by-step guide for every bandage. I just want to compare my overworld screen with someone who has all 100 bandages, so I know which worlds I need to explore and which warp zones to get.
This is a text-only list of which levels have bandages or warp zones:
Not exactly what you asked (because you asked for screenshots), but it is close enough.
If someone wants a comprehensive guide, including screenshots showing the position of each bandage in each level, check this series of posts (spoiler warning! the following links spoil all the fun!): World 1, World 2, World 3, World 4, World 5.