To write this signboard beautifully, you need to choose fonts that match the theme, use eye-catching colors and add explosive elements.

1. Choose a font that matches the theme: choose a font that matches the theme of "explosion", such as a font with strong sense of volume, movement or flame effect. This font can highlight the theme of the signature and be more attractive.

2. Use eye-catching colors: Choose bright colors with high contrast, such as red, orange and yellow, which can attract people's attention and make the signature more eye-catching.

3. Add explosion effect elements: Adding explosion effect elements such as flame, lightning and stars to the signature can increase the dynamic and visual impact of the signature. These elements can be realized by hand drawing, stickers, special brushes and so on.