A 2-5-1 lick is played over the 2-5-1 chord progression, in this case, Ab. The 2 chord is a Bbm7, the 5 chord is a Eb7, and the 1 chord is AbM7. The lick is basically divided into 3 parts: the part played over the 2 chord, the part played over the 5 chord, and the part played over the 1 chord. Let's review the chords.
Here's the first lick.
Now try the 2nd lick.
When playing 2-5-1 licks, play evenly and controlled. Don't force it into too small a space. When you're comfortable with the lick, mask it or bury it within a longer lick or connect to other licks, scales, or arpeggios.