Ash's Sprite Dump

[Kelvin]

Oddly enough, the best way to make something look like it's glowing is... *drum roll* Pillow shading. *lady screams* Yes, pillow shading; it's how they've been doing it for years. Just look around the sight at all the energy-based attacks, especially on light sabers, and you'll see it (although Megaman X added the gradient on slashes to give the appearance of fading light).