Line the perimiter of the pond with rocks concealing the mold/liner. Some plants can live in water and would do great in your pond such as lily pads. Add fish you will have to take care of them but they are a good thing to have as they make your pond more real. Once you have your pond you will be amazed of how much wildlife finds their way there. Frogs and fish eat bugs. Add a pump and a waterfall if you want.