There are no gardening mistakes, only experiments. ~ Janet K. Phillips
For me, building a patio planter, or raised bed, out of any materials you like, is a fairly straightforward project. However, I know that isn’t so for everyone.
Therefore, in a spirit of helpfulness, here are a trio of videos showing how to make a few examples of planters you could use a prototypes for whatever you would like in your yard. As you can see, it’s a pretty straightforward project.
this easy wall planter
is one of my favourite ideas