Wondering if my plan for a shed foundation will end in catastrophe
I'm planning on putting a storage shed in my backyard to store some extra stuff we need to get out of the house. I don't have a lot of money for this, so I can't dig up a lot of my backyard and put in cement - I also don't want it to necessarily be there forever either.
I'm going to buy a premade shed somewhere, so my only concern is the foundation. I know I can't just plop the shed in the corner of the backyard. What I was thinking of doing was something like in https://mobileimages.lowes.com/product/converted/890248/890248002009_03580607.jpg, basically getting several deck blocks and putting in a frame made of pressure treated 2x4s, then cover with plywood and then putting the shed on top of that. I was thinking a 10x10 shed so I would do an 11x11 foundation.
I know in the picture above the blocks are right on the grass, but I thought to be a little more secure and make sure it's more level would be digging a hole about 3" deep for each block and filling with gravel so I can more easily level it off. My backyard looks pretty much like the one in the photo, and the area I want to put this is already relatively level.
Any thoughts/suggestions would be greatly appreciated. It's probably obvious but this isn't my area of expertise, I just want to make sure this thing doesn't topple over or sink into the ground. Thanks!