Draw a small teardrop or wavy base shape
Add a larger flame shape around it
Use curved, pointed lines to form the outer flame
Add a few inner flame shapes with smaller curves
Make the tips uneven for a natural look
Keep the bottom narrow and the top wider
Layer multiple flame shapes for depth
Sketch light pencil lines first
Erase rough edges and refine the outline
Shade the base darker and the tips lighter
Add yellow, orange, and red if coloring
Use quick, flowing strokes for a lively effect