Children draw a New Years eve in three sections: foreground, middleground and background. At the bottom of the sheet they draw a lot of backs of human heads; these are the people looking to the fireworks. In the middle they draw a street with houses. People are standing in front of those houses, so think about overlapping! The third section is above the houses: beautiful fireworks. Colour everything with oil pastels. Use bright colours for the fireworks, including white. Don't draw too many details, that isn't easy to colour because of the oilpastels.
Whey ready, paint the whole drawing with dark liquid watercolour, because new years fireworks are at night! The oil pastels will resist the watercolour.