I just came back from Comic-con if you want to take a look at the photos: https://photos.app.goo.gl/oATLJtN285QioJmx8
My cosplay this year was the same as last years (Tenna from Deltarune), except this time the electronics were working!
I used a bunch of the makerspaces resources to work on this, and I appreciate all the help from everyone who gave me advice (shout out to @Lia and @platinumnqueen22).

