I think the best way to approach this is to find a photo of the environment you're trying to replicate - and get hardscape that matches to that vision. Is there some specific setting that you love or are envisioning? Without having something/an idea to build towards, you'll find yourself wondering a lot vs. being able to feel like you did a good job or not recreating what you wanted to see. Right now, I don't really know what you're trying to create so its difficult to really "critique".