Not too bad for shaped by hand. Think there are still a few pointers way back in this thread for other methods that may be easier, too. But, this should serve as a lesson for you and others.
Just buy an extra 5 screens when you get your nano - or any other accessory purchases. Yeah... they're almost a whole $1 each, but they last a good long time. 5 + the 1 you get with your nano ought to last even the most vaping vapers at least a year if you take care of them. I'd have to think it probably takes about 10-15 minutes to diddle with each to make it work, and they probably won't set as well as Epic's in your glass. So, you're saving $4.40 (4.90 for Epic screen 5 pack - $0.50 for these), only getting 4 decent ones (with "every one not being a winner") and taking the better part of an hour to do 4.
I dunno..... Maybe some folks like playing with metal with pointy edges with their fingers, but that ain't me. Then again, I'm so rich and crazy with my cash that I think its silly to worry about $1 for a screen that will last a few months in the face of the cost of a vape and what meds run me. What else are you gonna spend that $1 on that you can't pony up $5 for 5?
In other words.... what the fuck? They're only a buck!