Lisa, you've hit the jackpot.

This question is perfect for me to answer. I struggled with teaching this when I taught preschool. I also taught first grade and some of those kids were still struggling with the skill. I have several poems that might help. Different ones work with different kids. Practice yourself until you understand the poems. Then teach them to him.
Indian Poem
An Indian made a teepee (pull lace up and cross one under the other)
and it collapsed! (pull first "knot" down)
So he started another, (make first loop for bow)
and he took this string and went around it, (wrap other lace aroundloop)
and went inside, (push lace under new loop)
and there he had it! Two Tents! (pull loops for bow)
Another Indian poem
Build a tee pee
Come inside
Close it tight so we can hide
Over the mountain
And around we go
Here's my arrow
And here's my bow!
Sad Rabbit
Once there was a rabbit that was very sad because his ears were so long and narrow that he stepped on them all the time. One day a fairy landed on the bunny's head. She lifted up the bunny's ears and crossed them over like an x. Then she put one ear through the bottom of the x and pulled. Next, she made each long ear into a loop and made another x like before. She put an ear under that x and pulled again. From then on the bunny remembered how to tie his ears into a bow, and he lived happily every after.
Tying Shoes
(Sung to "Splish Splash I was taking a Bath")
Criss Cross and go under the bridge
Then you got to pull it tight.
Make a loop but keep a long tail
That is how to do it right
Then you take the other string and you wrap it 'round the loop
Pull it through the hole
Pull it through the hole
Criss Cross and go under the bridge (this is where you tie the loops together)
Now you made a Double Knot!!
Here are two books that might help. You can look them up on
Amazon I bet. I'm not familiar with them, but I added them to my list when I heard about them.
Tie Your Shoes: Rocket Style/ Bunny Ears by Innovative Kids
Red Lace, Yellow Lace by Mike Casey
I also taught my kids to tie a shoe that was NOT on their foot. It's easier to tie if you aren't having to reach around your leg. Practice with an empty shoe and then graduate to a shoe you are wearing.
Hope this helps a little.