Ditto what everyone else said, plus I let the customer know of anything I think may create a problem over the winter. Such as branches that look like they might come down with the snow. This way I can try and sell them on some extras with the fall cleanup, instead of just leaves. Plus, if they are a regular customer, it's a nice preventative measure to help them winterize their property so the spring cleanup will not be as hard, and keeping the property up from year to year just makes it look better for you.