Mix together the flour, salt and water to make a soft dough. If it's too sticky, add small amounts of flour until pliable. Be careful not to add too much as your creations will crack if the dough is too dry!
Roll the dough out, or press it with your fingers, to about 1/2" thick. Cut ornaments out with cookie cutters and place on cookie sheet, or you can place dough on cookie sheet and cut them out directly on the sheet.
Bake for 2 1/2 hours. Remove from oven and let cool.
Paint each letter with a different color acrylic paint and let dry. Repeat with another coat if needed. Spray with acrylic sealer spray.