I'm sorry but I can't tell you what kind of yarn I used. I received it from my great aunt probably 5 years ago. I used a number 9 crochet hook for the scarf. It's about 15 stitches wide, double stitch the whole time, except when I make the "button hole", which I chain 3.
I only have two in-progress shots because, well, it's a scarf.
I was switching back and forth between making the scarf and the flower... Well, I switched once since the flower was fairly easy. I used http://blog.craftzine.com/archive/2006/11/how_to_crochet_a_five_petal_fl.html
to make the flower. Here it is right after I crocheted it:
Sorry for the light, my camera is old :( It's just a solid black, I know the light makes the color look grey.
I have finished and detail shots for you, too :)
This is much closer to the colors of the scarf. It's just a blend of a blonde-ish color, brown, as well as some blue and maroon.
Here's a detail of the flower "button" after i already attached it:
And here's one of the "button hole":