Side Pipes - 74 Duster

I saved it off the web, came out small. Was not sure how to make it bigger. So I printed it - full page, then scanned it thinking it would be bigger. Came out same size when uploaded :( Obviously I'm computer challenged. Tell me how and I'll make it bigger. I think the design is way cool. It even includes gills.

Post the web link and I'll see what I can do. If it's too small, blowing it up will kill the resolution