Greetings from the other side of the pond and welcome to QB! I simply love your first time quilt! I venture to say not many of us could go back and look at our first quilt and say it looked that good lol.
i have been reading all of the replies and smiling because as a new quilter you may be amazed at all the variant opinions. Sometimes that can be confusing and frustrating to the person wanting the "real" answer. But the reality is they are all good answers, it just illustrates there is not just one right way.
Now if I were smart I would take Nan's sage advice and not voice my opinion. But alas, I always have an opinion and always like to share it, hahaha. So here goes..... I have not seen anyone mention the loft of the batting. That has been the most tradional way of controlling " crinkling". It appears I am the rare bird here who does NOT want my quilts to get all crinkly which is why I exclusively use the lowest loft battings I can find. Using a higher loft will ensure more dimension and crinkle that will also highlight your quilting. Hope this helps.