Next Fanfest Cosplay Help

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In Game

I'm currently planning out this for next Fanfest as it will be my new main and looks like it won't be overly cumbersome either. However, since I am still VERY new to the cosplay world (4 cosplay ever, 1 bought 3 made and looked... tacky) I'm hoping for some tips and rules for some parts.

Firstly, the gun. I was thinking of snagging a NERF blaster after X-mas for a good sale and then Paper Mache the proper shape before (struggling) to paint it. **ADVICE WANTED**

Secondly, for rules. Something like the bit / bot / drone / turret. What are rules in place for something like this? Does it have to touch the ground? Can it have power but only spin so fast? etc etc. **EXPERIENCE REQUESTED**

I'm sure I'll have more questions as I tackle this project head on. So please bare with me and hopefully this will turn out great.

My very first cosplay was at this year's festival. I am very much a novice, but I did learn a LOT while going through the process. I would be happy to share all the resources I gathered together as I was trying to learn how to make my costume. I am still gathering, as I too am already planning out the next cosplay I want to do :) If you would like to email me, we can chat and I can share what I know.

I would love to! I don't think we're allow to post personal info here but I have a YT channel (search my name on YT) and send me a PM there and I'll get in touch with you. :)