@Quindin Sorry, there's no tutorial. However the good news is I think it's fairly simple to make. It's like any other shaped pattern up to row 36.
For the first 5 knots of row 36, make those forward-backward knots and before each knot add the base string(s) from any previous knot(s) you have already made from that row. Gently tug on each individual base string while pushing those knots up into place.
The rest of it is like any other shaped pattern until you get to the tail where you can do the same trick for those first 3 knots of row 44
@carbar you have to hide the loose strings in the knots at the edges.
Why is it falling apart? What did you do? Did you try to cut the loose strings? That could be the reason why it's falling apart.
I recommend going to youtube and searching for the shaped frog bracelet or the shaped evil eye bracelet to learn how to knot shaped alphas. It's the same technique.