www.steppables.com

first of all the pathway isn't wide enough. secondly take into consideration the people who will use the path. Are they elderly, disabled or some other reason for difficulty walking. In my case I have elderly friends and a daughter with MS. You also need a hand rail. Anything between the pavers needs to be weeded or mowed and also makes some people take bigger steps than they are comfortable with. When working with a slope I would hire a pro.

Thanks