As others have said, aXML sounds a lot like YA templating system. On that note, check out HTML::Mason.

The main reason I'm writing is to encourage you to keep working, exploring and learning.

Corion is right when he says that writing a templating system is right of passage. I wrote a crappy system within a few weeks of starting to code perl. It's such an easy thing to do, it's such a common need. Fortunately for me I wrote mine when I was still baby talking perl and when I discovered CPAN, my code was so obviously inferior it was easy to justify the move to better tools.

Take the time to investigate the similar tools that are available. Read their docs, learn to use them, experiment and read the source. If you find one that meets your needs and design philosophy use it, and do what you can to help it get even better. If you don't find something that floats your boat, all that work will give you an excellent experience that you can draw on while building your own system.

So don't get discouraged. Please take our advice and comments as an invitation to further exploration and learning.