In which I fail at knitting mittens

So, I was going to knit Z some mittens to match her new hat, which conveniently matches her coat. I'm new to knitting mittens. I knit myself a pair and they're falling apart because I just tried to get away with tying the yarns together and cutting them instead of weaving in all the ends. That was dumb.

Anyway, this is a brand new fail. I tried to knit these mittens on 2 needles and just seam up the sides. I can totally do this in crochet, but I like knit mittens because they use less yarn and they're not as holey as crochet mittens, so they can be a little warmer. Look how nasty the seam on the side is. Yuck. And they don't have a nice cute shape or anything. Now that I have one mitten, I have no desire to make the other one equally as ugly.

Incidentally, I used this basic mitten pattern formula. I do not think it's the fault of the pattern formula at all. Perhaps it was just the combination of yarn and size of mitten and my newbie mitten knitting skills and not knitting it in the round...

(sigh) What do I do now? Crochet a pair?