Here’s a tutorial by the Natural Land Trust on Landscape Design. Here’s a gem from the article:
Or just plant what you like—that’s what’s most important.
Here’s some more good stuff:
Don’t forget to place a few flat rocks in the garden to use as stepping stones when you weed; they create a space to put your foot and keep you from compacting the garden soil.
And, finally . . .
Then, voila! Plant your garden and you’re finished!