Sister's ideas may be different, but not "better." Simple is good. Keep doing your own thing. It is ok to get feedback, but also ok not to use all of it. Get inspired by looking at quilts and patterns that speak to you and then quilt, quilt, quilt! If you do it, creativity will come! As a creative quilter, sometimes I get bogged down in the details. Then I take a breath, let go, and just sew!