When you say drums, I suppose you mean Kicks and Snares specifically, so I'll share what I did to learn them. It's difficult to describe how the waveforms of Kicks and Snare look on a spectrum visualizer, much less how to mimic them. One help full tip I could say is try to understand the fundamentals of each: which frequencies support or destroy their sound? how does their wave travel on visualizers? Gaining and improving on the knowledge about them will definitely assist in mimicking them.