So I'm making my son a sackboy for Christmas, and boy was I so happy to find a pattern for it! Here's the problem. I am following the pattern, but because of the increases, it's making little "holes" in the fabric. Now, I've seen pictures of the complete sackboys, and I don't see any of these holes that I'm making on theirs. Any idea why mine would come out this way? Maybe i'm not following it right? Here's the pattern up to the point that I have on the needles right now:
Cast on 12 sts with Click for base edge and st st 2
rows.
1st inc row K1, (inc 1) three times, K3, (inc 1) three
times, K2. [18 sts]
Next row Purl.
2nd inc row K1, (inc 1, K1) three times, K3,
(inc 1, K1) three times, K2. [24 sts]
Next row Purl.
3rd inc row (K2, inc 1) three times, K5, (inc 1, K2)
three times, K1. [30 sts]
And here is what it's coming out like:

I'm a left handed knitter, but I don't believe that would be what's causing this. Any help would be appreciated.