I'm seeing some really great tips here - thank you! I've been practicing on fabric, and it's much easier for me to keep my rows straight with equilateral triangles, so I think I'm going to use those, instead.
My finished quilt will be fairly small, and it will NOT have 1,000 pyramids - I just referenced that pattern to help explain what I meant. If my calculations are correct, I should end up with about 250 triangles all together.
I will definitely keep you all updated on my progress!