I would suggest you get a good book on applique, and start with something simpler. The one I learned from was 'The New Applique Sampler - Learn How to Applique the Piece O'Cake Way', and it's wonderful. The instructions are very clear, with lots of photos. But I'm sure there are many other good titles out there as well. I would not try something so intricate until you've built up some basic skills.