I'd like to see you try.
Naturalism is the belief that there is only the physical realm, and that there is nothing beyond it. The problem with it is that everything that has a beginning has to have a cause. The universe had a beginning, obviously. So what was the cause? This is where naturalism breaks down. If there was nothing before our universe, then there is nothing to have caused it. Obviously, that doesn't work.
Also, there is no documented instance in scientific history that has proof that a new gene had formed in a complete, healthy genome. Modification of genes? Yes, we have proof of that. New genes popping out of nowhere? Nowhere to be found. Any, "proof," has proven to either be an unconfirmed theory, or a modification of an existing gene, rather than the adding of a new one, or the removal of a gene in a controlled environment to force the creation of a new gene.