Roger, sorry I haven't gotten back to you sooner, but my electricity keeps going off from the storms we've had and my computer is now acting up.* Thanrose gave you a great answer and I agree with what she said.* Hope you saved some seed.* If not, wait until you mow a couple of times and then build up the soil level with NO MORE then 1/2" of soil each time.* Let the grass grow through it and get mowed a couple of times more before you add more soil.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.