looking nice, it is very evenly interesting tho , no real focal point, but that probably changes when you add the window details and such considering it appeared in a snow world, a winter HDRI would be more appropriate, or maybe some hangar studio setup
looks nice , but the colors feel not right, its very warm light and the background hdri dosnt have it. in northern / cold areas the sunlight is a lot colder try out the "color lookup (CS6 and up) > crisp winter look" in photoshop, feels a lot more natural color grading is always allowed ; )
Thank you everyone ! Yes it still wip. I'm planning to add a few more blaster impact on the wing to break up the symetry. I work with various HDRi all the time to be sure that the model works in every lighting. In the end there will be a winter HDRi but it's quite hard to find a good one. (maybe someone know where to find…