Personally I feel that your style of free motion quilting will be individual - regardless of the pattern you use - as we all have different hand writing - so we too will all have different quilting styles. I'm not too focused on being original - because as far as I can figure out every idea I have ever had has been done before!! But I am focused on being good at what I do - and sadly the only way to get better at anything is by practice. (Gosh how dull is that!)
If you are focused on getting better at free motion quilting using a sketch book is a really great way to help you practice patterns and record ideas. You can take it anywhere - stick anything in it - scrawl in a way that no one will understand (that's me!) - and it doesn't matter - because it is to record your inspiration and ideas. When you flick back through it you will be amazed at how many ideas are there - it is always the first thing I reach for when I am stuck as to how to start a quilt.
If I think about how much I have improved in confidence as well as technical and ability in 9 months since getting Freddie - it makes me feel mildly warm and fuzzy. Teri's words 'practice, practice and practice' are still ring in my ears - and it is true - it doesn't get easier overnight - but just keep going, keep practicing and the possibilities are endless. The only way to get better is by practice and drawing the designs over and over again - it will all help you when you eventually bring your material to your machine and quilt with confidence.
Notes for designs on Maria's Curve Quilt
As a quilter (can I say that now?) I feel like every pattern I look at makes me think 'ooh that would make a nice quilt' - keeping notes and drawing patterns help me remember all the inspiration and ideas that spring into my little head.
My sketchbook scribbles are much too messy to share - but check out LuAnn Kessi's website - she shares so many of her sketches with all of us - they are gorgeous. She also wrote an article in Machine Quilting all about keeping a Design Sketchbook.