knitting a baby blanket

I'm getting ready to embark on my first large-scale knitting project. I've knit a little pouch and a scarf, both fairly basic, easy-to-do sort of things. Now I'm going to try a baby blanket. I'm modifying the pattern from one I found at Lion Brand's website. I'll keep the basic blocks (about 3 x 3 in squares), but I'm changing the color scheme. The girl that I'm making the blanket for doesn't know if it's going to be a boy or a girl yet, so I'm doing the typical white/green/yellow color scheme. Ideally, it will end up like this:

G Y W G Y W G Y W

W G Y W G Y W G Y

Y W G Y W G Y W G

G Y W G Y W G Y W

W G Y W G Y W G Y

Y W G Y W G Y W G

G Y W G Y W G Y W

W G Y W G Y W G Y

Y W G Y W G Y W G

The real kicker will be the fact that I'm going to have sew all the little blocks together. I hate having to sew pieces together. Almost as much as I hate weaving in the ends. Those two steps seem to give me the most trouble.

But there's nothing like facing your fears and challenging yourself. And sewing all these little squares are going to be a challenge.