The Use of Board

The thing is with my teaching that it is all clear in my head. As soon as it pours out in form of sounds or images - it gets complicated. Take the given photograph for example. That's the closest I have come yet to explain Present and Past Participle.

People said I should get another whiteboard which won't help at all I fear - I'll just have two boards crammed with information that won't make any sense to the viewers.

Any suggestions concerning improvement are welcome!