hey there, this is my video 
the oscillator retrig was essential for have a really clear and strong attack. Each note becomes a tiny bit more punchy
its a very subtle thing, dialing in just the right sound. But in general you want to try what the others have mentioned, slightly detuning, using either envelopes or LFOs to introduce movement to the sound, some slow vibrato, chorus, slow attack and release, etc.
basically your goals should be:
establish timbre
set amp
thicken the sound
add movement
at least thats how i do it anyways