Great job and welcome to the knitters ranks!
A very nice start.
I would suggest a simple hat as a next project. It gives you a chance to learn how to do ribbing (knit one, purl one) and knit in a round. The same knit stich in a round will make a different texture. Then if you feel adventurous, you can learn decreases to shape the top (which is really just knitting two stitches together) or knit straight and just tie up the top. The best thing you can make anything from a chic slouchy to a wacky hat with a huge pom-pom