I am a novice knitter and want to design and make an afghan for my daughter. It will be made entirely of individual blocks joined together or a very large center panel bordered with individual blocks. The blocks (and center panel if I use one) will be a solid black background with a large turtle in the center. I’d like the design to look nice on both sides. I was thinking about using stockinette stitch but was wondering if garter or some other stitch would give me a “reversible” afghan. Also, any tips on how to change colors in the middle of the row would be greatly appreciated!