Jojo is a double Yellow-Headed Amazon. Not textbook prefect, but meets the process of classification for a DYHA. What she is missing is the continuation of the Buttercup Yellow deep onto the back of the Neck and the splash of Red on the Yellow Feather-ends on that area of the Neck.
If you or someone in the future should want to Show her, that would need to be acknowledged in the entry documents. That would limit her getting Class Honors, but not in placing well.
Enjoy, Jojo is clearly becoming a really sweetheart!
FYI: I would recommend that you include that information regarding what she is missing regarding the classifications of a DYHA. It is a clear identification marking that would help in I.D. ing, her if ever needed.