Donato- one way to improve images that come from camera phone snapshots is to crop away a lot of the extra background so you have more "stamp" in the final image. I can actually do this cropping right on my phone, however I usually email the image to myself and crop on my laptop.
Irfanview software (you could call it "donate-ware") is extremely useful for editing stamp images. Something really valuable in Irfanview is you can set the file size when you save the image so you automatically have an image you can upload to this forum (300K or smaller). I actually have this as a saved setting that I can turn on and off.
Here is your image but this time cropped. The image is still blurry, and the stamps still small so not really an improvement over the original image. Unfortunately, since the original photo was quite low resolution, I was only able to provide an image that is 80K. Your phone may have a setting that allows you to increase the level of detail- this would allow for much more detailed images that take the most advantage possible given the 300K limit for the forum. But at least you can see the benefits of cropping.
Let me know if you'd like more help on this. Improved images will help the forum provide you with meaningful feedback on your questions.
