Welcome! I like the last pattern the best, but it requires a pop of some color (orange in that quilt) to make it work, so it won't be as impressive done in all neutrals. My second choice for a pattern for a beginner is the first quilt. It's attractive and doesn't have bias edges to contend with like the second pattern has. I think if I were making the quilt, I'd add some dark brown to the mix to provide some contrast.