ninja turtles next mutation sketch of Donatello

a rough sketch of Donatello from the next mutation series back in the late 90's. i mainly do all these sketches for quick practice because i never really knew how to draw the ninja turtles. and i'm still in the process of learning how to color well. for this sketch, i wanted to try a different coloring technique but i didn't really have the time to spend coloring differently, so i just colored it like i did the rest.