[RStar]

It looks great!

You should put plastic bender board up against the deck, and dig a small drainage ditch (this may require romoval/transplanting some of the plants in the front) along the deck to divert the water flow (you can put gravel in the ditch to prevend erosion). If this water flow issue is from rain that causes a large amount of water all at once this may overwhelm the ditch, requiring a lanscsaping drain with an underground pipe that will cary the water to a location that can handle the volume. If it is rain, and is from a downspout, can that downspout be moved or diverted?

Good luck!