For the invitation, I picked a picture from a Spiderman and Friends coloring book that had Spiderman, Hulk, Wolverine, and Captain America (all my son's favorites)in Spiderman's clubhouse. I scanned the picture and colored it in on my computer. I then added all the party information. I said, "Calling all Superheros, an evil villian has stolen the cake for son's 4th birthday party! Spiderman needs your help to find the cake and save the party. Report to Spiderman's club house on date and time of party for superhero training. I then included the address and a map on the back of the card. These looked very nice, and set up the theme for the party very well. I