[Question] Bitcoin and Fib Retracement ?

٨ فبراير ٢٠١٥

Excuse me, I am very new to technical analysis :) . Am I using Fib Retracement correctly ? I find it more accurate if I did not place it at the two top point 143 and 305, which I think I am supposed to do. If you ignore them and used the second 169 and 272, it touch every where nicely. look at the green arrows.

why is that? is it because the high volatility of Bitcoin?

Thanks for your help :)