Assuming the road is not heavily travelled, the only advice I can give you as an instructor is:

When landing, don't try to fly in slow and chop the throttle waiting for the plane to drop (chop and drop). Fly the plane down to the runway. As you approach the ground, relax, and let the wheels come down. Its hard to get used to, but control your speed with the elevator (up elevator will slow the plane down on approach) and throttle controls your elevation (too low, add throttle-too high, reduce throttle).

Congratulations on flying solo. Don't give up on getting some buddy box time with a club instructor if you can. It will help you improve all the faster.

Brad