This is the sketch I used to design my cosplay prop.
It took a few hours, two poster boards, and three sheets of printer paper to make it.
The actual prop took a little longer (and cost a bit more) XD
I will submit pictures of it eventually.

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Update!
Here is the final product Sasha Team Fortress 2 Prop

Festive Version:

Festive Minigun TF2 Prop

Festive with the lights on:

Festive Minigun TF2 Prop With Lights On

Festive Minigun TF2 Prop With Lights On 2

My Cosplay:

Fem TF2 Cosplay

Parts List:

Parts List

How to:
Coming soon!