Hello again, scrubs and scrublets! If you've used my numlock method for jump cancels but didn't like it for some reason, then this may just be what you want!
The shift and numlock method yield the same results when done correctly, so there is no difference except the method used.
I'm keeping this one short, so here's what you'll need to do for each frame.
Frame 1: Hold down the RIGHT shift key. Keep it held down.
Some time between Frame 2 and Frame ∞ : Release your RIGHT shift key and press your LEFT shift key at the EXACT same time.
Like always, here's an image representation.
And like always, a random jump which I did with jump cancelling just for the giggles!
Good luck learning this new and EZPZ method of jump cancelling! Happy needling.
EDIT: Lower jump cancels!
Your jump cancel height can vary depending on how long you hold the left shift after doing the jump cancel. If you keep it held until touching the ground, your head will always be a few pixels above one block. If you release it early, however, you will go even lower! (5px, as hector estimates)
Here's an example.
Just keep the left shift held for a shorter time, and you will jump even lower!