Review and correct schematic for a Raspberry Pi Pi-Plates integration using powered sensors

I am looking for someone to review and correct my schematic for a Raspberry Pi Pi-Plates integration using powered sensors. The schematic is currently complete, however I am not sure what the problem is and know I need help solving it. The integrated sensors are temperature and humidity sensors and water level. The successful candidate must demonstrate experience in engineering, specifically in designing schematics and working with the Raspberry Pi. Excellent communication and fast work rate are also essential. I welcome applications from experienced freelancers with relevant skills.