*this is just how i carve my pumpkins every year
this is not the only way/process that one could use to come up with a totally awesome design that beats down everything in its path
Step 1: Getting inspired
So first think of things you might possibly want on your pumpkin then a quick google image search could help you find something close to work with.
Step 2: Reference images
Step 3: Drawing up your design
Unfortunately i have lost the original drawing used on my NBC pumpkin, but I do have one I just drew up for my star wars pumpkin.
While drawing up you design, keep it simple. Remember, all you will be seeing is an silhouette too so pictures with very fine details wont really have much of an impact on a viewer. If you're picking something recognizable like I am, make sure it actually is recognizable by the silhouette alone. Be careful too of "islands" or pieces that would be floating. I ran into that issue a bit when drawing up this design.