In iOS 8 Siri is better than ever, if you know all the tips. Here are two more to use to make Siri your own.
Make Siri Wait Until You Are Finished Speaking
This was the one thing that really bugged me about using Siri. If I stopped speaking for even a second while I tried to remember that next word, Siri would assume I was through and act accordingly.
There is an easy solution. Continue to hold down the Home button until you are finished speaking and she will very politely wait her turn.
Launch Settings For Specific Apps
I particularly like this tip for launching settings for specific apps because it bypasses all the steps you have to take after you even find and open the main Settings app. You just tell Siri to open that specific setting.
Remember that you can launch Siri without even turning on your phone, but if you utilize a passcode, you will have to tap it in first. Once you see the microphone icon at the bottom of the screen that tells you Siri is on, say Open (application) settings and you will be taken directly there. As an example, I said Open Safari settings and got this screen.
Safari Setting Window