Nicely done, I like them both. The color one is especially well done, it does indeed have that antique look, and it reminds me of a hand colored print.
Here's a few things I find that really help make look photos old:
Low contrast, no deep blacks for example, shades of grey instead.
Shallow depth of field, due to slower film speed back then requiring big aperatures.
No fast motion shots, for the same reason.
"Vignetting", either light or dark, in the corners.
Slightly soft focus. Today's cameras and lens are much sharper, so soften things up a bit if needed.
Here's an example (not by me, I think it's a real vintage photo)
http://www.watsonswildlife.com/civil_war_photographs/civil_war_2.jpg
Note that the men are obviously standing still, the depth of field is limited and the photo gets soft around the edges.
I like to work form a shot like that as example. Search on Google for "Civil War Photos" and you'll find plenty to pick from.
Of course you can also search for the era you're trying to duplicate, say "1940's photos" for example. However, the older
the photo, the more it's going to show the classic "old photograph" look, with thing like vignetting.