Fireworks displays are visually stunning and colourful events. Fireworks delight viewers of all ages and the images may last in their memories for years. Realistically capturing the look and feel of a fireworks display with a drawing can be difficult. The contrast between night sky and vivid explosions are difficult to convey, but if you're looking to draw the essence of a fireworks display, a stripped-down version is fairly easy to represent.
Use a dark background for your fireworks drawing to simulate the night sky and to highlight the many colours used in your work.
Choose an area just off the central point of your sheet to place the first firework burst, then choose the main colour for your firework, purple for example. Make a single small dot on the paper to define the centre point of your firework burst. Mark arcing lines from this centre point outward about two inches arcing to the left around half of the point's radius then to the right for the other half. Curve the arcs noticeably, but keep the curves gentle without too much or a change in radius form start to end. For some of the arcing rays, break them in two. These arcs represent the coloured explosions of the firework.
Switch to a complementary but lighter shade of the main colour used and go over the ends of each arc, covering about a quarter to a half of the arc in the lighter colour to highlight the arcs. Colour the outer halves of the split rays and the centre dot with the lighter colour as well.
Switch to an entirely different colour than the first used, red for instance, and repeat the process with the firework burst. Place the arcs from the centre dot, mostly between existing arcs, but with some overlapping as well. Do not place a new centre dot. Repeat the highlighting with a lighter colour, except use the highlight as a series of dashes along the ends to simulate the falling sparks from the burst. Also, place small half-sized arcs from the central point using the second highlight colour as well.
Draw additional bursts following the same pattern near the first to show an active multiburst display. Use different colours to add variety to your displays and vary the size of the bursts to simulate the idea that the fireworks explosions are at different stages in development. Use more of the dashed highlights on larger firework bursts, and fewer colours on smaller. Overlap the edges of bursts slightly to help blend the bursts together as a coherent display.