AAA Chorus Form with Fills

Thank you for helping.

I'm fuzzy on instruction at 57 seconds of the video: "AAA Chorus Form with Fills."

I think I have the main idea:  We should play a fill that differs from the A Lick in terms of character.  This is so the listener hears a distinct difference between fill and lick.  

Here's the instruction at 57 seconds, paraphrased: It's a good idea to play the fill higher than the A Lick.  If our A Lick is say 4 draw, 3 draw, 2 draw, we might not want to start our fill on a 4 draw or a 2 draw.  We might want to start on say a 3 draw or a 6 blow or a 5 draw.

I'm unclear on the meaning of playing the fill higher than the A Lick.  Does that mean start the fill on a higher note, higher numbered hole, higher octoave, or perhaps there's another meaning.

I sometimes get lost in minutiae at expense of the main idea. I may be making something hard that's not.

I'd appreciate any light on the subject. 

Thank you so much.

Britt