I have attached a pic of my first D9P. It isn't a bedsize quilt, but hope my suggestion helps. I have a stencil of a large daisy type flower and I started in the center and used pounce to evenly put the flowers on. After I quilted the flowers, I went back and just did a large meander between them to add a little more quilting. I lke the way it came out. I think the method is called "twice quilting" or something like that. I am still in the practice stage of machine quilting. Another option might be to free hand a small 5-petal flower and meander a little bit and put another one and fill the quilt that way. That is what I am trying on another quilt right now and I am liking that look.
I always start in the middle and do a quarter of the quilt at a time. I wouldn't even consider starting at the side or top unless I had a long arm and frame.
Hope this helps.
D9P wall hanging
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