Things You'll Need
Instructions
Measure the area of the wagon that you plan to cover and purchase UV-resistant canvas material at a fabric store or upholstery store based on your measurements.
Cut the fabric to the desired shape and size; fold the long edges over and sew the fabric down using a sewing machine to create a hem. Fold the short edges of the fabric over and allow enough room to insert tent poles through the fold. Sew the fold down to create pockets for tent poles to fit through.
Cut the tent poles down to the desired length using a hacksaw.
Drill holes in the ends of the tent poles and in the large battery clips that will allow hood pins or metal clips to be inserted through them.
Insert the tent poles through the end pockets that you sewed. Attach the ends of the poles to the large battery clips using hood pins or metal clips. Attach the canopy to the wagon with the large battery clips.