I’m new to Motifator and was wondering how to make my own sounds from scratch using the plethora of waveforms in the MOXF?  Any help is greatly appreciated!  Thank you!

It’s often a lot easier to understand what the various Parameters do by starting with a Preset Voice, and editing things one at a time. Normal Voice Edit, beginning on page 30 of the MOXF Reference Manual, covers Common and Element level editing.

If you don’t already have it, the Synthesizer Parameter Manual can be helpful:
http://download.yamaha.com/file/60487

If you truly want to start from scratch, then first initialize a Voice. See page 52 of the Reference Manual. Use the Waveforms in one or more Elements. The above references will still apply.

If you have specific questions, just ask.