Not an instructor here...
Why isn't anyone saying there is no such thing as "parallel english" to the original poster?
Hasn't it been proven for a while on these forums that it does not exist? It physically does not work. You may "think" your cue is being shifted parallel, but at the moment of contact through the cue ball it will actually be angled and look exactly like BHE if you were to have an overhead camera of the shot and froze the frame at cueball contact. This is true if you use BHE, FHE, combination of both, "swipe" the cue while it is in motion, line up with stick already angled while in your stance, etc. All these methods lead you to the same exact stick angle at the moment of contact with the cueball.
I used to think that I used "parallel" english, until I started reading what BHE was on here. Then, I realized that when I spun the ball, my stick was in fact at an angle. Just freeze on your follow through, and see if your stick is straight to the line of the shot, or is angled.
I personally approach the shot with my stick already angled, and the tip at the right amount of english, but there are many ways to get to the same result.
I apologize if I'm wrong, but I thought this was already hashed out a few years ago.