To 'see' the Gods is very advanced and can take you a long time to do this, but you can begin to 'sense' the Gods and feel them when you perform their rituals and pray to them. Build the connections more and more and with time, listening and being able to visualize them will arrive to you.
Important advice is after you've activated your 3rd eye, continue to work on it on a daily basis by breathing energy into it during your meditations.