After finding your pallet, do a quick inspection to make sure there aren’t any unwanted nails poking out that could be potentially dangerous. Use a hammer to pull out any nails you find or hammer them and bend them so they're safe.
Next, if your pallet is too large, use a saw to cut it to the size you want.
Then it is time to add landscape fabric to the back to hold the dirt and plants. Cut the fabric to the size of your pallet using scissors. Make sure it will wrap around any open sides as well.
Add the landscape fabric to the back of the pallet. Wrap it around the sides of the pallet slightly and staple securely.
You may even need to cut additional pieces if your fabric is not wide enough to cover the entire pallet at once. For these additional pieces, just be sure to staple them securely.
Next, staple where the two pieces of fabric join one another. Continue around your entire pallet until the back and any open sides are completely covered.
Fill your pallet with potting soil.
Then just add in your plants.