Nice work, as far as teaching kids, just start with the basics. For a set period of time work on lines. Have subjects, like a still life, almost anything, and try and explain that you want to follow the lines you see. Then work on shading, dark to light, in little squares. Do drawing exercises like speed drawings, or opposite hand drawings. Once you start with color, you can repeat the same exercises with color, just trying to get used to the brushes, etc. With kids I would guess the most important thing would be patience and encouragement! Good luck!