First, I drew it on Clip Studio Paint to get the idea of where everything is because I believe doing sketches on Asesprite is difficult for me.
Next, I redraw it on Aseprite with a lower resolution to give it a more pixelated look.
After a realization, I do not think this was a good background for the project. I believe that it was too dynamic for my taste and wanted something simpler and more retro. So, I ended the illustration at this point and started to make a new background.