I really want to get some video with my submissions. How would I go about capturing my 3DS for use with the PC? Looking for both homebrew and non-homebrew methods.

I have an Old Nintendo 3DS XL.

As far as I know, the 3DS capture card production has stopped, so if you want one, you'd need to get a used one second-hand.

If you want a homebrew method, you can try NTR, but that's exclusive to the "New" 3DS lineup.

^ or you could get creative with a webcam setup

Just do what I do: Use my phone/tablet and just record over it. I have my device on a stand so the camera is fixed pointing down. I then just play my system and keep it perpendicular to the ground to get the best capture.