Find a landscape image.
Use online software to create a coloring book black and white image of your landscape. Lunapic.com is free.
Edit the image to fit the hoop.
Trace the hoop circle over the center of the image.
Cut a piece of muslin about 2 inches larger than the hoop. (8x8 inches)
Trace the image with tracing paper onto the muslin.
Fit the muslin tightly onto the hoop.
Start stitching the image using different colors and simple straight stitches.
Consider using thicker yarn to stitch some areas like clouds for a textured look.
When complete trim the muslin about 1.5 inches from the edge of the hoop.
Turn the hoop over and use a running gathering stitch close to the edge.
Pull both ends of the thread and tie into a knot.
Cut a piece of backing fabric to cover the back.
Hot glue along the edges.