Thanks, I'm not sure what you mean by the full size images. I wanted to make my card 4x6. This isn't going to work? How can I post the full size images on the Dis. I uploaded them into photobucket from an email my daughter sent me. What did I do wrong? Thanks so much for you hard work. I think it looks great by the way.
Thanks for the compliment.
Regarding "full-size images", I'll try to sound nontechnical as I try to describe this. Let's say your daughter gave you a wallet sized photo (2 x 3"). If you want to do a reprint of this photo, you would know not to make a 11 x 14" reproduction of this photo, since enlargements tend not to retain any details of a photo.
On the other hand, if your daughter gave you an 8 x 10" photo, you can easily make smaller 3 x 5" reproductions, and those reproduced photos would still look good. When you shrink photos, they still retain a lot of detail.
Now, think of these images as being made of thousands or millions of pixels (the digital equivalent to dots of paint). The more pixels you have, the larger the photo you can create. For example, a tiny image like this

is only 15 x 15 pixels. When you shrunk your photo in the 2nd example, your 8x10" photo had a lot of pixels (millions of pixels?). You can imagine that if you wanted to create the smaller 3 x 5" photo, all the computer has to do is throw out the whole bunch of "extra" pixels, and you get your 3 x 5" photo.
Whereas in the first example where you make an enlargement, let's say you started with a wallet sized 2 x 3" photo. This photo would, perhaps, contain thousands of pixels. But if you wanted to enlarge it to an 11 x 14" photo (millions and millions of pixels), the computer would have to somehow create millions of pixels out of "thin air". You can imagine that in this case, an enlarged photo would not appear as sharp and may possibly appear "pixelated".
A general rule of thumb is that you can enlarge photos by about 10%, and they would still look pretty good. If you try to enlarge photos greater than that, then you run the risk of getting "pixelated" photos that are not as sharp.
So the 639 x 425 pixel photo that you provided would be considered "small". If you calculate this out, your 639 x 425 pixel photo is actually
0.3 megapixels! I'm sure that even your camera phone can produce photos that are larger than 0.3 megapixels.
I'm going to guess that your daughter's wedding photographer probably had a camera that can produce pictures of 12 to 16 megapixels in size. Her photographer likely took pictures that were full-sized, but sent your daughter small preview/proof samples to share with everyone (ex. by e-mail, on Facebook, etc.). The photographer will use the full-sized photos (ie. the 12-16 megapixel photos) to create larger prints, wedding albums, etc.
These small preview photos look good on the computer screen and on tiny smart phones only because both of these are low resolution. However if you try to make a print of a photo, you actually need high resolution photos (lots of pixels / megapixels).
You can try asking your daughter if she has larger versions of these 2 photos. I'm going to guess that she doesn't. You can also try asking your daughter's photographer to see if they can provide you with a larger (or even original) digital version of these two photos. However, professional wedding photographers tend not to give out original-sized digital photos, unless you're willing to pay a high price.
(Craigslist wedding photographers will happily give you all the original-sized digital photos on a CD/DVD for free. However, the whole topic of Craigslist wedding photographers is a completely different discussion...)
If your daughter's wedding photographer only provided her with these small preview versions of these photos, then I'm afraid that this may be all you'll have to work with.
Disboards does allow you to post larger photos, if you have them available.
Again, if you're looking to print a 4 x 6" version of this photo, I would go to a photo store and order a test 4 x 6" print out this photo, just to see how it looks. If it ends up looking good, then you can feel confident that your Christmas card of this picture will look good as well.
(I would also order a test 3 x 5" print, as well. If this smaller print ended up looking better than the 4 x 6" print, then perhaps you can still use a 3 x 5" size photo in your Christmas card, but add a flowery, decorative holiday border around the photo to make it 4 x 6" total in size.)
Hope that wasn't too confusing. I tried to use simpler numbers so as not to be too technical.
