I run all my drums parts and synths through my sherman filterbank, and it gives me buckets of noise, ambience and movement that I can filter and layer in the background, or just beef up the parts with.

I use stereoizer to create space, and create widened layers of synth sounds with slightly different processing than the main un-widened part. Makes for some big rich synth noises.

Lastly, I get stuff mastered. If you haven't got stuff mastered yet, do it! You'll be amazed how good your own productions sound once they've been professionally mastered.