For maximum efficiency with cutting printables, consider in investing in a cutting tool like the Silhouette Cameo or Cricut Explore. Both allow you to print out any shape and cut around the printable. It takes minutes to set up the file and cut compared to hours of using scissors.
However, if you want to create something custom to fit your needs, you can learn to create your own! You'll need to choose the right software and learning program, and you'll be well on your way to making amazing and unique printables.