Distortion is when your too close to the camera and use of a wide angle lens. I used the front camera of an ipad and put the it as close as I can towards my face. I found some difficulty aligning the shot because the camera was like holding a mirror. I avoided this effect by taking a picture at arms length. I can use this in a self portrait photo. I found a clue that the no wide angle distortion shot, you can see your ears more compared to the first picture.
I created the distortion in the first photo by having someone and on a ladder. I would use this in a security camera prospective. The second picture was achieve by putting my hand close to the camera.
Good work.