For this demonstration we have chosen to use sedums and therefor a sandy, gritty soil.
Cut the liner to fit the bottom half of the frame including the sides. (Tip: the liner can be gently stretched to fit)
Make a rough plan with the plants and stones.
Cover the bottom of the frame/liner with a layer of soil.
Start planting. Don't be afraid to break up the plants in to smaller pieces.
Try closing the frame to check the distance between the plants and the top of the frame.
Don't worry if the plants are touching the top of the frame they will sort themselves out in time,
however too much space between the plant and the frame could mean that the plants might fall when hung up.
Don't forget to add all your bits and pieces (Tip: if you have a lot of soil exposed cover it with a little garden moss).
When the planting is complete lightly water and back fill again. The frames take more soil than you might imagine.
Carefully close the frame and clip together (Tip: a couple of cable ties or wire will help to secure the frame).
Finally water according to the type of plants. If your frame contains sedum plants, use very little water.
It is possible to leave the smaller frames to soak in a bucket or a basin, but not for too long.