feedback about my app

hello there i just made an 8 ball app

https://drive.google.com/folderview?id=0B6SJN1EIY4cqNTljc2p5TUIxc1U&usp=sharing

i have some questions

how do i give a presentation / introduction screen

how do i change my icon app instead the corona default icon?

and i want after 3 shakes the answer pop up not at the first one