Never let anyone tell you not to try a thing. Even yourself! If you love it enough you will keep at it until you have accomplished. If you look at the pattern and see repeats of sections you know if you do it once you are already ahead of the game. I have, in the past, tried a thing just because I wanted one. When it was finished everyone told me it was a crazy place to start learning. I was able to do it because no one was around to tell me it was too ambitious.