Hey there! First of all, I think you did an amazing job understanding and applying the base structure of the eye, well done! The angles you're struggling with are very tricky. In perspectives like these, the visible volumes we have to draw are almost nothing like the way we think about the eyes general shape, so we can't only rely on the knowledge we gathered drawing easier perspectives. I also do fairly struggle with this, but there's at least one tipp I'd like to suggest: Try connecting the outer corners of your eyes with a curve as similar as possible to the curving of the plane given. This will help you getting down the general direction of the eye more accurately. The rest basically depends on how well you can imagine and apply knowledge about perspective in combination with the volumes of the eye. I hope this helps and keep up the grind!
