Still needing help for the gmod player model

Haha so a couple months ago I made a model in blender and did not know how to port it to gmod player model and I still don’t know how to, when I try to export the model to smx it says there is too many bones or something like that but I don’t think it has too many bones any ways I’m bad at understanding things so can it be really simple guide (it is the koshitan model)