1) starburst or rays effect made in Lazpaint by using 'angular gradient' with 'HSL CW' Then using Colors > Posterize option.
2) Playing in Lazpaint artwork. Running character with different poses was made from 'Pivot animator' which is simple, free and powerful 2d animation software. Background was made in Lazpaint. Different poses of a character was imported in Lazpaint as different layers to put on background.