[2015 DIY] Window Screen

Difficulty: 3/5
Time: 3 hours each if done alone (Even a kid can do this. My crafting skill and familiarity w/ hardware is literally elementary school level)
Budget: ~$50 for all three of my big windows (larger than 20"x 40" each) including all new materials (knives, etc.) -I'm probably over estimating it.

Since the beginning of last month, my apartment had been stable at around 30+ degrees Celsius - which is killing both my sister and me. Fans did not help much, because the air circulating indoor is too hot... Window screen then become our next step to cooling down our place.

The cost to install metal or plastic custom made window screen by a professional will take around $100+~400 depending on the size of the window. Our windows are relatively large- I've estimated it to cost more than $500 if I were to install the screen on all three windows in my house. So, I asked the handyman in my church, Eric for help.

Special thanks to:
Eric for the idea and brief outline of how to do this. 
My bf who helped me got all the materials needed to complete this project and helped me start the first parts.
My sister, for doing NOTHING. =_=

Detail steps: