First make sure you have a good working area where your finished project can lay FLAT for drying, after you are done crafting. If you need to transport your craft after creating it, working on a large cookie sheet beforehand, would be great for moving it afterwards.
Now let's craft! Separate your clean, empty egg carton into two pieces. The lid and the compartment area. Discard the lid into the trash {or save for another day} while saving the section with the compartments.
Next using scissors, cut apart your egg carton compartments, one section at a time and trim them down so they lay flat. Each section will be a pumpkin.
Have your child paint each egg carton piece they just trimmed up, completely orange. Set aside each piece to let them dry completely.
Grab your blue and brown cardstock. Tear the brown cardstock in half {hamburger style} to make the "dirt" in the pumpkin patch. You want it slightly rigid so that's why I suggest tearing, versus cutting the brown cardstock. Keep in mind, it doesn't need to be completely straight either!
Once done, use some glue to attach the torn piece to the blue cardstock, to complete the pumpkin field look. Set aside.
Now grab the black cardstock. Trim out small rectangular stems for each egg carton pumpkin section. Set aside.
Next, it's time to start gluing down the egg carton pumpkins into their field. Grab the thick tacky glue and put a good layer of glue on the back of each painted egg carton pumpkin piece and place it down on the paper, on the brown cardstock section. Repeat for each piece.
To finish your egg carton pumpkin patch, glue down the black cardstock stems you previously made and draw some simple squiggle greenery around the patch, with the puffy paint.
Add any other embellishments you see fit. Set it aside to allow your piece to dry for a few hours before displaying proudly for all to see!