Print or draw the template. You can find it anywhere, just google search it. Cut and fold as shown. :D It's very easy.
Step 2: Glue
Time to glue it. After this your Shoe(s) shall look like these...
Step 3: Spiders
Place 6 pieces of wire on paper and glue them there. Cut that piece of paper and fold a little bit if it's too big. Glue a shell or something or them to make spider's body. And your spiders are ready!!!
Step 4: Paint
Paint spiders. I would suggest to use black anyway... you can use any color you want. Draw spiderwebs on the shoes using an eyeliner.
Step 5: Gems
Glue gems! Lots of gems! Everywhere! Your thief spider really stole them! And ...yeah! It's so good at stealing!