Need ideas to hid the bottom.thanks

Long tall planters full of flowers?

Lattice?

I would suggest using lattice around the bottom and secure with some supporting boards. Once this is done you could do some planter beds if you are into gardening. If not you can just build a small bed around all sides and fill with stone of your choosing. I would put landscape fabric down first. This will keep the area neat and pretty maintenance free.

We used lattice. It’s easy to clean if you get the processed.

I agree about using lattice. Four x eight sheets are relatively inexpensive and can be cut to size. It's a neat classic look that will camouflage the concrete blocks and wood shims. If secured properly to the shed, it will keep some critters out from underneath your shed, too. Some ideas/pics: https://www.pinterest.com/pin/363525001145504362/

https://www.pinterest.com/pin/261631059578979609/

And at the following link, some pictures of how people used lattice skirting around a structure on a slope (like your shed):

http://aribe.net/deck/2842-installing-deck-lattice-on-a-slope-.html

mobile home park will not let me use lattice unfortunately. thanks for the suggestions

Mobile home skirting at least you can cut to sizes and cheaper or add more decor bricks

We used 1 x 8 boards and started at the top attaching to the shed and as we got to the edge close to the ground we had to dig the dirt to bury the part which wasn't even with the rest of the shed. We finished the corners with L shaped bracket material and painted it. We planted grass around the bottom of the shed after all else was done. We were able to just use 1 layer of 1 X 8 boards but your ground has more slope than ours so you may have to go another layer under the first 1 X 8's.