Design challenge 002---Full face mask

I would like before leaving the link of a designer who left a human head available so that I can use it as a reference https://free3d.com/pt/user/printable_models

I made this protection mask due to the challenge applied in the Autodesk Ambassador Hub, trying to follow the following specifications:

The mask shall be capable of covering the entire face of the user including mouth, nose and eyes, protecting the user from projected particles
The mask should seal the skin of the entire facial contour avoiding any leakage protecting the user from unfiltered air from the environment entering in the mask
The vision of the user should be kept possible as much as possible
The mask must have straps enabling a self compression of the mask on the face
The inhaled air should contain a sterile air, with a low CO2 level and free of virus
The inhale and exhale ports should use conical connectors (ISO 5356-1:2015)
The inhale port should connect to a filter housing
The filter housing port should use conical connectors (ISO 5356-1:2015)
The filter housing should allow a replacement of a filter membrane graded N95
The exhale port should pass through a valve
The exhaled air should be oriented toward the user but backward
The assembly should be designed to resist over time to at least one of the listed decontamination protocol
Decontamination protocols
The Centers for Disease Control and Protection has validated the top methods for effective decontamination. However, consideration for the impact of each method on respirator performance, such as filtration efficiency and fit, must be factored into design strategies.

Moist Heat: 60°C for 30 minutes at 80% relative humidity is the most prefered and effective strategy for decontamination.
Vaporous hydrogen peroxide (VHP) treatment: Around 150 minutes treatment with vapor, additional purging.
Ultraviolet Germicidal Irradiation: UV light of sufficient wavelength and dose is a promising treatment, though it is dependent on dose, and all surfaces must be exposed.