It sounds like you would have good foundational knowledge of some of the issues justice-involved, and dual-service youth would face. Now, the flip side is you would certainly need to make an effort to understand forensic practice through supervision, consultation, and continuing education. Your practicum sounds like it was a good start in exposing you to a competency evaluation and a general psych evaluation, but I would argue that you would need quite a bit to get up to speed.
I don’t mean to come across as harsh, but from my own experience with local panels, too many practitioners have found these types of evaluations to be an easy revenue stream and jumped in without the requisite training or experience. The result is subpar evaluations that ultimately ignore the fact, that as forensic evaluators, the courts are looking for opinions that assist in making some very consequential determinations for minors. When these opinions are rooted in flawed methodology or incompetent practice, you can see how harm can be done. And, as Buckeye noted, beware of those same private practitioners who would eagerly take you in as a report writing worker bee.
Soapbox over. I would recommend any of the continuing education courses through Concept CEs or the American Academy of Forensic Psychology. They can be pricy but you’ll ultimately be receiving instruction that reflects best practices. It will be a worthwhile investment for both preserving your license and credibility.