years ago I really hurt the edge of my foot at the 'contact zone' after one run. It caused me a lot of pain and to take a couple weeks off and not compete in a race it was so bad.
I had something similar where I was putting too much weight under the 5th met, developed a callus, which then pressed on a superficial nerve. Not fun.
This is the problem with giving advice on landing a certain way, lifting the knees, using gravity, etc. While this advice may very well help a few people, it may be completely wrong for others. Some people who think too hard about forefoot running, end up trying to run on their toes!
There is a reason why there are coaches and gait labs. They can look at a persons gait, give advice, and see if it has been corrected. This iterative approach is very important.
When I learned how to swim, the instructor would observe and identify areas in need of improvement. She would have me try various drills to see how they impacted my technique. Some suggestions worked, some didn't. Slowly, we figured out what worked for me.
Thinking about landing on the outer caused me to put too much weight on that area. Now when I run, I think about landing in the center of my forefoot pad, and conceptualizing it in this way works for me. However, I may very well be landing lightly on the outer edge!
This process will likely be different for everyone.