So here's a set by set of how you set about carving Heisenberg and the Let's Cook pumpkins
Sorry for the jumble of pictures, I got arrived away and forgot to take as many as I could
As of the 27th October this Instructable has been featured. A huge thanks to all who have made this possible!
Step 1: Gather Supplies
Also gather a spoon to hollow the pumpkin
A set of very sharp knives
Dress makers pins
Music, tea and patience
If you want to save the seeds for next year, you'll also need a sieve to wash the seeds
Step 2: Gut the Pumpkin
Save the seeds of you want to grow your own
Step 3: Get Your Greyscale Template
Start by opening the image in an editing software. I use Paint.Net
Find the setting to convert the picture to Black and White.
Then find the setting for "Posterize" or similar. This separates the image into different shades of grey according to the depth that you should carve to alter the light intensity.
Feel free to use my greyscale if you want
Just print onto plain A4 paper
Step 4: Attach the Template ( What Not to Do )
DO NOT DO THIS
The paper looses all structural integrity when wet and even sharp knives end of ripping it in the wrong ways
Step 5: Attach the Template ( Right Way )
This will keep the paper dry until you start cutting
Step 6: Trace Out the Outline
This will destroy the template, so either have a device with the picture or a second print out handy for reference
Step 7: Start Carving
On the template, white areas are almost completely removed, light grey areas carved until very thin, darker grey is thicker yet and the black areas are untouched, leave them at the thickness of the pumpkin and leave the skin on
I managed to take a few photos of the Let's Cook pumpkin with the rough hacks then smoothing out the design
Step 8: Never Give Up!
I started at some point around half past 8
The first picture was taken around 10 I believe
By no means is this a quick process
And after many song filled hours, around 12:40am the second picture was taken
The final picture, the cover picture, was taken at around 2am