I am with OBG on this one. Flash cards are pretty useless for the most part. If you are injured, I pray that you are not in the hands on untrained individuals. Clueless responders need a lot more than a flash card since they are typically too flustered to read. In my experience, you can probably do a better job administering first aid to yourself compared to the efforts of an untrained person.

I have had to self administer first aid, up to and including a fractured ankle. While not necessarily superlative, it was sufficient.