Remember to wash your red!
I know that Sophie already mentioned it. But I thought it was worth a reminder since I was one of the people who had a problem with red and white blocks in the past. I won what I think is called a Disappearing 4 Patch in red and white back in 2011. It made a beautiful quilt! But a couple of blocks bled pretty significantly after I washed the quilt. I can’t tell you how disappointing that was! I spent a lot of time and effort getting the red out of the white and did eventually have an acceptable quilt.
Anyway, my advice now on red fabric is to wash it like you normally would. But I always then soak it in the sink just to check that it isn’t still bleeding a lot. Most new fabrics will tint the water in the sink, even after washing, regardless of their color. But if my red fabric turns the water more than a pale pink I rinse it and soak it again. I know this sounds like a lot of work, but it isn’t nearly as much work as trying to get red dye out of white fabric.
I do love a red and white quilt though! So I hope I have time to participate this month. Good Luck!