«كأن مثار النقع فوق رؤوسنا وأسيافنا ليل تهاوى كواكبه»
The raised battle-dust above our heads and our swords are as though a night in which stars are falling.
The image is not fully analysed by matching dust with night and swords with stars separately. Each side presents an organized scene: darkness, moving points of brightness and their interaction within a single setting. The shared feature is the overall configuration.
To analyse a composite comparison, map the features of each side and identify the one coherent appearance emerging from them. This distinguishes it from a mere list of unrelated similes.