Thank you Kat and Zarina for your positive comments about my fabric. To answer your questions Kat----I have used three fabrics when I dye---200 count Muslin that would be great for machine applique since it doesn't ravel a lot; Quilters Cotton that I purchase at Joanne's (it looks like Kona cotton); and plain old inexpensive muslin---not the dirt cheap kind that is so thin you can see through it, but the next one up---about $2.99 I think. It seems to get thicker with the dyeing and hot wash. I use both unbleached and bleached muslin and I really can't see the difference. I have tried "overdyeing" fabric but at this point I haven't gotten good results.
I am going to experiment in making up my own recipes and try my hand at making solids. At this point my fabrics have lots of "movement" that I like, but sometimes a solid is what you want in quilting.
Although my DH thinks my fabrics are as nice as some you can buy, I have to plans to market them. If I did, my "hobby" would become a "job" and no longer fun! My grandchilden are intrigued that you can get so many colors from essentially three "pure" colors.