True: mothers, police and even bosses don't always get their way when they get confused about whose life they have control over (their own, only).
I think that a gentle slope is a life-saver when you have poorly draining clay soil. Drainage! Gravity is our friend.
I tend to make raised beds on slopes, even if the side walls slant downwards, or look like a stair-case. I figure that the down-slope wall keeps the amended soil from running downhill.
But I found that raised bed walls that are too tall tend to let TOO MUCH moisture escape or evaporate (I use concrete paving stones stood on edge as walls, 3/4" thick or 1" thick. Water and moisture go right through them as if they weren't there. Sometimes I line the walls or corners with heavy plastic film.
>> blend egg shells to a powder and also add coffee grounds to the garden. Anything else you can suggest to add next Spring?
Lots of composted manure and coffee grounds are great! I agree that egg shells do better if ground up (in my heap, they stayed whole and white much too long). I would also add to the soil almost anything organic other than wood or paper (they consume too much N when they decompose IN the soil). Chopped leaves or grass are great, whether you compost them first or not. Kitchen scraps.
You can till it into the soil, if you were going to till anyway. Or you can spot-compost by digging holes and burying compost makings.
Don't neglect adding organics to the soil via mulch (slow sheet composting)! Wood chips and anything else organic and chunky can go on TOP of the soil where they will shade roots, retain moisture, prevent weeds, and then break down and add nutrients to the soil.
(If you have animals, avoid burying meat, diary or fat, since they will attract volunteer diggers.)
