Three-dimensional, sports-related cover assemblies for propane tanks are provided in order to permit sport- or team-related decoration of the tanks. Upon the request for a product catalog by the user via a user interface a backend retrieves images for the product catalog from external image sources and converts the retrieved images to render inoperable potentially malicious code embedded in the images. The crocheting a latitudinal wale in a short segment on each two edges of the latitudinal course with several parallel longitudinal crocheting units to form a continuous latitudinal webbing coiled arrangement. The method also includes providing a substantially particle free environment adjacent to the front face and the back face as the liquid is being removed.