All of the art in my stories (except the ship in the first chapter of The Stowaway) is done by me, so please excuse the occasional chapter when I don't have anything. Some chapters lend themselves to illustrations really well, some to multiple, and some to none at all, unfortunately. 

I try and make a drawing for every chapter, though sometimes I might publish a new chapter and add the drawing later. It all depends on time and inspiration, just like anything else! 

You will definitely notice improvement in the drawings, especially once chapter 36 of the Stowaway hits. I had to take about a year's break due to school swamping me with work, but I kept doodling and sketching during that time, so my art had a lot of improvement. I honestly didn't notice until I looked back at the older chapter illustrations...

I typically have a very busy schedule, so although updates may be slow or inconsistent, my story is not forgotten. I have the plot outline all typed up, even some scenes for the future written out, so it's just a matter of finding time and being in the right mood for writing or typing up the chapter.