No harm trying.
But no point using 12X zoom or whatever.
Just mount camera on tripod, put photo against a flat surface and take...to proceed. No flash.
Make sure it is facing straight...i tried before on my photos. Results are good. But in end i still get a scanner.
Downsizing actually means 2 things:
1) Scaling down the size of the image (say 1000x500 to 500x250). If you're not making large prints, it might not pose a problem.
2) Re-sampling for poorer quality. :nono: If you don't intend to print high-res images. (ie grainy prints)