1. Ua "Kav Xwm" -- yuav tau mus kawm los ntawm "xib fwb" thiab mus nqis tes/pab/saib thiab lid paub/txawj txheej txheem/hauj lwm
2. "Txhiaj Txhais" ces yog tswv yim xwb -- kuj muaj kawm thiab, nyob ntawm cov "xib fwb" kam qhia xwb (yeej yuav tau mus kawm tib yam)
I do not know (have enough formal experience/knowledge) to educate/help you. I am learning this stuff myself at the moment; formally from a "xib fwb". And to properly/adequately be a "Kav Xwm" -- yuav tsum paub/kawm "zaj" -- as they are required (mandatory). Apprenticeship (formal training/education) takes 1-2 years minimum. And upon finishing, it does not guarantee mastery of the trade, meaning you can do the "job" right off the bat.
*** Being able to read/write "Ntawv Hmoob" definitely helps. If I did not have this ability/knowledge, it would be pointless (extremely difficult) to learn (or even try).