Here's the 1/4 scale Screamin' Products Luke Skywalker, Jedi Knight vinyl figure. The figure is built almost straight from the box. I modified the head, as you will see.

The original figure had one major problem. The sculpting on the head seemed too big. The front and top of the head was too vertical, giving Luke a slight case of hydrocephalia.
These computer edits of the above photos helped me plan exactly how to go about doing the physical modifications. I worked out where and how much to cut before modifying the model itself.

And here's the modified figure. I heated the vinyl and cut a thin wedge piece out of the sides and rear of the head. Starting from a single point on the temple, I went down at an angle to the back of the head just above the neck, then around and up to the opposite temple. This removed piece was about 1/8" at its widest point. I then heated the vinyl again to flex the top of the head down to close the gap.

The joint was puttied over and hair resculpted along the seam. Quick coats of Tamiya Desert Yellow were applied throughout the process to judge the progress of the putty work compared to the original hair sculpting.

The hands were pinned to keep them aligned properly while the glue dried. The waist joints were heated and flexed for a closer fit. Finally, one shoulder was glued in place and, when it had fully dried, the other shoulder was heated and glued.

The figure was painted completely with Tamiya acrylics. Desert Yellow was mixed with Brown for the shadows and White for the highlights in the hair. Flesh tone was straight from the bottle with Pink drybrushed in to the facial contours and knuckles on the left hand. Clothing is Flat Black, with the belt, boots and right glove done in Semi-Gloss Black. Silver details finish off the belt.

The figure is attached to the as yet unfinished base (a simple wood plaque from Michael's craft store) via two screws in each foot. The kit included a simple piece of rod for the saber blade. Even replacing it with a piece of green-tinted clear Plastruct rod didn't appeal to me. I designed a more interesting and accurate saber with a bit of a flare at the base and the proper taper up the length to the tip. A friend turned the blade on a lathe for me.
Here's the completed figure. I also put him on a larger display base, which still may change when I finish the Darth Vader figure.