This tutorial is for making a basic pumpkin to turn into your own Jack O' Lantern design.

Download my attached pumpkin gradient and put it into your .gimp/gradients folder. Refresh your gradients or close and re-open GIMP.

1. Make a new image, 650x650 and fill the layer with white.
   
2. Make a new transparent layer and name it pumpkin.
   
3. Click Image > Guides > New Guide
   Make horizontal guides at 25 and 625.
   Make vertical guides at 25 and 625.
   
4. Select the pumpkin layer and click the Ellipse selection tool
   In the toolbox make a Fixed size circle that is 600x600.
   
   
   
   
5. Draw the ellipse and center it in the guides.
   
   
   
   
6. Select the Blend (gradient) tool
   Find the pumpkin gradient.
   Settings
   Sawtooth wave
   Check Adaptive Supersampling
   
   
   
   
7. While holding down the Ctrl key put the cursor in the circle and place it so that the beginning triangle on the ruler bar is somewhere between 175 and 250 and drag it to about 325. The closer to 325 you start dragging, the narrower and more plentiful the stripes you will get. The result is a striped circle that has a light orange stripe about in the center. It's not necessary for it to be exact, just close.
   
   
   
   
8. Unselect (Ctrl + Shift + A).
   
9. Filters > Distorts > Lens Distortion
   Settings
   Main = 100
   Edge = 100
   
   
   
   
10. Repeat Lens Distortion 3 or 4 times or until you have an image that looks like a round pumpkin with curved sections.
    
    
    
    
11. Image > Scale Image > Break the chain to the right of the Width & Height settings.
    Settings
    Width = 700
    Height = 600
    
    This makes the pumpkin not so round. You can make the settings different for a pumpkin that is taller than it is wide. Pumpkins come in different shapes.
    
    
    
    
12. Right-click the pumpkin layer and choose Alpha to Selection.
    
13. Select > Grow 10.
    
14. Filters > Distorts > iWarp
    
15. Leave the default settings in iWarp and along the top and bottom edges sections push slightly inward on the darker lines trying to trace back along the lines as best you can. Pull the lighter edges outward smoothing as you go. Be gentle. Try to get smooth, rounded edges on the light orange sections. Keep in mind that no pumpkin is perfectly symmetrical.
    
16. If you are not happy with your first try, right-click the layer and Alpha to Selection. Again, grow the selection by 10 and go back to iWarp, or you can press Ctrl + Z which will undo the iWarp changes and return to the iWarp dialog. It may take several tries to get it how you want it - it did me.
    
    
    
    
17. Unselect. Your basic shape is finished.

Another way to try is to fill your 650x650 image with the striped gradient placed more closely together and Filters > Map > Map Object and make a sphere. Then go to iWarp.

This is an image I made last year before I made the pumpkin gradient.




Download and unzip the pumpkin.ggr file into your gradients folder.

Cool tut O; might give it a go later.

Very nice tute "O"

Quick try before running off to work.

very cute 2-ton

Very nice quick try, Toni.

Excellent job on the curving in iWarp.