DIY Baby Shoes

Yesterday I went Olde Salem Days and while there bought some super cute shoes from Crazy Leggies and they inspired me to make some for Adeline. I used the Modern Baby Bootie Tutorial from Tao of Craft. These are my first attempt and I am a beginner sewer so they are not perfect! But they are wearable and hopefully I learned a lesson or two so I can make more for Adeline!

Any recommendations on how to sew a straighter line in the curve of the shoe? That was my worst newbie mistake!