Feel free to say anything you want, and CONSTRUCTIVE criticism would be appreciated. All are done in Paint and the first and last are touched up with Gimp.
in addition, the guns are metallic. therefore their darks should be darker and their brights should be brighter. basically, when dealing with metal, i like to make my darkest close to black and my brightest close to white. contrast = good with metal.
another thing: your ball is shaded as if the light is coming from the camera. this is commonly called pillow shading and it doesn’t look that good when you sprite. Sprites are generally shaded with a light source from the top left.
The guns would look better without black borders, more contrast and less colours. This could apply to mosst of the stuff you do <=/
Practice will sort that out, don’t you worry