Help with shawl please

Can anyone help me with this pattern , I am wanting to do just the part I circled. But im not sure which part it is on the pattern or how many stitches i need to cast on.So i would be working the pattern from the bottom up also.

It looks like Clues 4,5 and 6 here:

Test out the pattern on a few repeats to see how it works. If you block the swatch, you’ll also get an idea of how many sts to cast on for your application.