1. The copper clad becomes whitish completely when left ideal for 15-20 sec as you can see in image I uploaded.
2. The toner on copper clad get easily removed by simply scratching it... not a strong bond I think
Good for you!
I agree; the white bits are remnants of the paper and can be rubbed or brushed with a soft brush while soaking...
How much force does it take to remove toner? Like Hero says, it does not stick that well but shouldn't be a problem, however if it removes while gently rubbing as above, that means your copper is not cleaned well enough. (The copper surface must be VERY clean.)
If you do get some voids, but most of your traces are good, you can fill gaps with a 'Sharpie' permanent marker:
**broken link removed**
Take it easy on yourself; it is your first so don't expect it to be great. It can take a couple or three boards to figure out your technique. You don't have to etch the first one. If it isn't good enough, clean it off with acetone and try again until you have something you like before you etch.