I thought it wasn't very clear that the primary cloth is a twill weave, not just a plain ol' tabby, so after weaving a sample in monochrome twill, I did a second sample with a contrasting magenta weft (in addition to the blue contrasting secondary weft). You can see the two samples above. Following is a closeup of the monochrome sample, and after that the contrast sample. Click to enlarge. The contrast version is perhaps not the most attractive, but it does show up the twill clearly.
That blue secondary weft, by the way, is a nice flecked silk noil from Habu that's been languishing in my stash for years. It works really well in this structure.
As I have said before, those reed marks may or may not go away.