Rocket train (Finished & steps)

I was finally able to finish this drawing. The truth is that it took me a lot to finish it, I wasn't liking how the base colors turned out and that's why I put it off longer than necessary, but now I returned to it with more enthusiasm and was able to finish it. It doesn't convince me at all but I feel that it is at least acceptable.

Well, I hope you like this crossover train. thank you. ^-^