Help with a new Lightroom Preset

Mephisto Devils Work

Hello,
I just tryed to create a preset which copy the style of some analog taken pictures.

Here are the analoge ones, that style I would like to copy:
http://www.flickr.com/photos/mephistodevilswork/sets/72157626486267122/

And here are two examples with my preset I have made:
http://www.flickr.com/photos/mephistodevilswork/sets/72157626361551583/

The Preset is available here:
http://presetpond.com/presets/lightroom/old-film-in-latin-america/

May be someone can help me and make it a bit better?

Thanks a lot. :bow