Departure of large steam punk Victorian butterfly - WIP stages

This steam punk inspired scifi illustration features a large mechanical butterfly getting ready to depart from a very elegant aircraft hanger. It was painted digitally during February 2021. The picture above shows three stages of the creation of the artwork. In the first panel can be seen the digital drawing for the scene. The lines are there to indicate perspective lines for the building and other elements as it is important for mechanical/ man-made objects to be correctly and solidly drawn. In the second panel some basic colours have been added and indications made of tonal values. The image is still at a small scale, just over 1000px on the longest side. The final panel displays the finished illustration. To get here the artwork is enlarged from what is seen in the second panel to a size of 6000px on the longest side. The painting is then repainted to a higher, more finished standard with details and better tonal choices. The artwork of the steam punk butterfly can be seen in greater detail by following this link.