I really love your design of this Blue Ghost character. It is a beautiful and unique design, especially it is showing an illuminated glow. I also like how you designed the background. Whether it is transparent or some kind of metamorphosis, I like the outcome of it.
You have envisioned this picture to come to life, especially for everyone to see here on DeviantArt. You must have been inspired by either the Pac-Man series or some other media that you really love the most.
Your technique is very good and you have certainly made an impact for me. It's because it's a simple design and there are times where simple designs are much cooler than the complicated works of art. Well done.