|Greetings from the Critique Club!
Lovely mashup of images, trying to tell which ones are which, as the Aurora Borealis/rainbow looks really plausible :-) Glad to see this did well, but I think it only didn't do better because there are many great elements here all competing, not one of them is truly dominant over all the others. The track on the left in the frozen field, the mountain, rainborealis, and heavily starred sky force the viewer's eye to seek out just one element to rest on. It's just too cluttery. A little more colour pop would help too.
Hope this helps and please keep up the good work,