This is an improved (I think) fan shroud for the Monoprice Select Mini V1. It uses the stock fan and screws. The purpose of this design is to reduce internal vortices and hopefully allow better airflow over the nozzle to improve overhang printing. The ears for the spring clips could stand to be reinforced some or at least printed with high infill to improve strength. Mine lasted about 4 months before one of the ears gave way.
Pictures show SolidWorks flow simulation for before (original) and after (new design).
EDIT 12/10/2018: Added Solidworks Part file as requested. I believe it is compatible with versions 2017 and newer.
Experiment with supports and orientation. I printed fan-side down and had good results.