it looks really great. SITD can be hard to keep IN the ditch. Try using a decorative stitch if your machine has them. Even a utility stitch can be very pretty. On the last quilt that I did, I used a fagoting stitch. if I got off the ditch line you couldn't tell and it was actually kinda pretty. even a simple zigzag can be interesting on a seamline. my favorite is a serpentine stitch. it makes the quilt look poofy even when it's not. try some of the stitches on your machine. You might be really amazed at how good it looks!