It needs some work. You might notice that the wiper on the volume control pot is not wired. In the regular TRF sets, the wiper lead was connected to the mounting bushing, because the wiper went to ground. One end of the pot went to the RF and detector cathodes, and the other end went to the antenna. As the volume was turned up, the cathode resistance was decreased, and the resistive shunt across the antenna was increased.
Some people doodle when they're bored.
One night, I built a radio.