I like the last pink one the most because it reminds me of shirting material which is hard to come by now. Second best is the first blue one, for some reason it reminds me of old-time cross stitch embroidery. The others are interesting but a little more on the modern side for me but I'm sure that big fans of modern will love them. Wishing you the best if you are planning to market them, I think you have design talent, especially for the modern side of it.

If you are planning on using all four, I would remove the black and white one and find something in yellow.

I like them all. They are a combinuof tone on tone and geometric. I especially like the first one