Groundwork

For newaza always remember hips and legs. This is just like taijutsu.
When you're under in guard or under his mount, keep your hands in (so he can't use them to create a lock) and pump those hips up (ala bridge) to create space and thus make a getaway. When on top (i.e. mount) be sure to keep control as I told you, hook in feet etc and smother him. With the mindset of Jissen however, rememember that we don't want to stay there for too long. In keiko, we can have fun (well some of us), roll around, try new things, but in all sincerity this is a place we don't want to remain in for anymore more than a few seconds. Take down, gain control, compound attack, roll off and away.
Keep it strong!