This is my interpretation.
Metaphorically, it's kind of like the voices in one's head. The families of people living and playing inside, where it's safe...afraid to go out. So afraid to go out, to explore the world outside of what's inside the head that they have an artificial presentation of the outdoors there, a drawing....because they miss it, the voices miss it, or he misses it, going outside. But it's safer inside. He has everything he needs.
The mouth is slit open, as if wider than normal. As if he would not only speak, he would speak unafraid, but the cover over his mouth, riveted into his face, it represents to me that he's unable or unwilling to speak, or the voices fear what will happen if he opens his mouth wide to speak the truth.
So in that sense, I think it's a very good representation of "Afraid".
The single chair, in a way, bespeaks loneliness, too. The 'home' in his head is sparsely populated. There's enough room to exist in there, and that's about it.
The tears just tell us that he's aware of the struggle. He wants to break free, but is constrained. Fear has made him a prisoner.