Ahh, images. I don't see anything in pdf::create that allows for embedding images.

In that case, you could try the module Rolf suggested (pdf::reuse), using the prText method to write to the existing template. But instead of replacing tags, set up the position of each dynamic data element in your Perl script (e.g. ~fullname~ has a position of {10,50}). Then, store/read the values for replacement separately. Doesn't have to be text - could get fancy and read them out of an Excel file, or database...