Demonstrate to the students the different effects you can create with filters using the woods.jpg picture to create a scary woods scene.
Open "woods.jpg" in GIMP
At the top
CLICK on "Color"
select > "Brightness and Contrast" or "Hue and Saturation" and play around with the slider bars
to make it seem more dark and eerie.
Then at the top CLICK on > "Filters"
CLICK on > "Filters"
CLICK on > "Filters"
CLICK on > "Filters"