Casted on for Sahara

I casted on for Sahara on Jan. 1, this is a mini kal between me and my sister. I casted on while we were sitting in the car waiting to exit the Navy Pier parking garage ^0^, the girls was watching movie, I was knitting, poor hubby!

I'm using Tilli Tomas Pure & Simple in color Aqua Zing, I bought it from Sarah before the whole messy pricing situation started. I got gauge using Knitpicks Option #6 needles, my swatch was 22 sts/30 rows before blocking, I guess I'll be following the "inches" instructions not the "rows" instructions.

This is what I have so far, I'm knitting long sleeves version size S. I always have problem trying to decide what size to make, now this one suppose to have "negative ease" but this yarn stretches...I hope I chose the right size....crossing my fingers.