Hey Aniket,
If you would like to share your component with me I can take a look. However if you want to look through questionView.js in core you'll see the methods you will need to overwrite at the bottom. The feedback method you are looking for sounds like 'showFeedback' - which should do most of your logic
This is something we will create documentation for - and will eventually do a walkthrough.
Thanks,
Daryl