Hi, I've been knitting a million years but this shawl has given me a headache start to finish. First, I haven't knitted lace weight in forever it this seemed to be a simple pattern. No real pattern, just a couple of rows and some suggestions along with a graph for the edging. No indication of where to start graph, whether knitted lengthwise and attached, stitches picked up and knitted out, or stand on my head. Well, it is finished and the top edge is almost as much a triangle as the bottom edge. It was the standard eyelet at outside edged and yo, k2, yo in the center. Any guess as to what went wrong?
I made a shawl which had a similar problem so I changed the pattern and now I only increase in the centre on alternate rows and it sits very nicely.
You are certainly not going to pull it all undone to fix it so, when you put it on, fold the top edge under so it sits better.
I do this with all of my scarves now and they all sit very nicely on my neck.
After a while the shawl will change shape and sit even better.
PS. On second viewing of your picture, I have a question or two.
Did you start with a Small number of stitches and increase until you had lots and lots of stitches on your needle?
Is the border added after you Cast Off?
The reason I ask is, on the triangle scarf I make, the row of increases which I can see above your pretty border, are at the top edge of my scarf and the border is where your neck edge is.
I will add a pic which is also done in similar yarn to yours, so you can see the lines of colour point the opposite direction to yours.
Of course, you may have used a pattern which is totally different.