Not all songs will transfer over to blues that easily. In the case of "Jingle Bells" though, you can get away with this being that there are only a few chords.

The chords in "Jingle Bells" are I, IV, and V; just like a blues. If you play it in C, you simply make C into C7, F into F7, and G into G7. You should also add more a shuffle feel to it and you should be good to go.

For songwriting, Lisa McCormick has a ton of great stuff on the site. Check this out;
The Magic of Chord Theory