Here is the quick tutorial on creating snow in Maya!
Hope you like it!
First of all, check the camera base selection in the Select tool! Then select the top faces of your object in top view! Duplicate selected faces and assign them an emitter
We just need 0 speed with enough amount of emit rate! Do not forget to set the gravity at 0! Now just play the frames and stop where you reached your desired look!
The last step is the converting particles to geometry!