Carol Shinn's new book is great. I think it's called Freestlye Machine Embroidery. It will take some time to learn and lots of practice for you to be able to produce a piece that is more to your liking. I have been doing machine embroidery for over four years now and I'm just getting to feel proficient and some what skilled. I don't mean to discourage you from trying it and I hope you'll keep trying. I really enjoy doing the machine embroidery and love the looks that can be obtained.
Please don't despair! I have been practising free-style machine embroidery for a while and longed to combine it with hand embroidery.
My hand work is by no means perfect but I am gaining experience and enjoying the journey!. You just need patience and a certain amount of stubborness. Good luck!