2015 :d adventure arch cave cloud crepuscular_rays cute cutie_mark detailed_background equine excited eyelashes feathered_wings feathers female friendship_is_magic full-length_portrait hair happy hi_res horn lavender_fur looking_back mammal multicolored_hair my_little_pony noctilucent-arts open_mouth open_smile outside portrait purple_eyes ruins sky smile solo sunlight twilight_sparkle_(mlp) winged_unicorn wings