I would clear out some of the other trees around them and go for more low shrubs to contrast, I would also look for agreat huge boulder for the side of the driveway with your house numbers or your name. Don't clear too much or it will not look natural just enough to make the oaks the stars, they really are wonderful.

Your oaks ARE great, and already natural looking, so I guess your question is vague to me. Are you trying to make a landmark so people can find your house? Or are you just wanting some landscaping ideas?

I would leave every tree you can keep there. You will be so glad that you have privacy ( an extreme luxury these days)... Huge boulders or rock or block entry walls with lighting would be nice....or, some nice groundcover in front of them with a border and some solar lighting. That would be an easy and attractive solution, keeping it natural.

You can soften stone or wooden structures with planting

Plant ground covers that are not too dense, at time of planting, plant shade tolerant bulbs and cyclamens.