I need opinions on my wallhanging
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I am making a wallhanging for my DGS's college graduation. He is going to seminary in the fall and I think he will like it (sure hope so, it has taken me forever to make). I am going to use black thread to zig zag between the colors and changes in colors to make it look like stained glass. I am planning to use a light yellow for the cross in the center, the cross in the picture is just a paper template.
My questions are:
1. What kind of black thread do you recommend?
2. Should I use interfacing behind the cross?
3. What should I use for batting?
4. What color do you recommend for the border and the backing?