The first is to help with the lawn. Try growing out the lawn and don't cut it super short. Keep it long. This will keep the grass filled with nutrients, reduce disease, and keeps weeds from growing.
Second, the plants in your rock bed in the front aren't looking too stellar. I would replace it with hedges. if you want to take the rock out and replace it with mulch and flowers that would also look beautiful. I would work on that first then start the next phase.
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