As a witchy woman who already loves growing plants and making potions, natural dyeing is very exciting. Every time I do it, it feels like magick. I am never sure how the color will come out. Here is a video of dyeing with blueberries that were going moldy in my fridge and the finished brooch I made from the fabric.
As my work is not intended to be washed I like to be quite relaxed and let the process lead me. This method of sitting the fabric in the dye liquid (I added alum powder as a mordant) is from Slow Stitching by Clare Wellesley Smith.
I was a little intimidated by natural dyeing at first because it seemed so technical, but if you're willing to experiment it is actually pretty easy.