Hi I don't quite understand what you mean but I uploaded a video of completed model (with some bits removed!) which hopefully helps. How you've done it looks right to me? I can't see a difference between left and right?
The two angled pieces that the white bars are attached to, end up kinda 90 degrees to each other. The white bars start by following the line of the angled piece, but there's obviously a gap between the white piece and the angle piece as the angled piece er, angles away? OK i knew i couldnt write what i mean clearly so yeah check out the video haha
https://drive.google.com/file/d/1zxlh0nqAfJbQMJUsKBYQ6N2iepaLvXG4/view?usp=sharing