I really liked the style, and the way the drawing was colored. The design is really beautiful, of course, and I thought it looked pretty good to be put into adoption. I think a background would leave it more "Impactant", and would give a better look to the draw. Also, i think that the colors are amolst the same. I loved the Tabby choice for this cat, but i think it could be drawn better.
The "Monochromatic" colors was what made me more satisfied with this drawing, and I really would like to have it, but I can't ^ ^ Anyway, if you could use other styles, more distinct colors and make various types of breed, it would be realy cool and interessing!
A well-done job. Congratulations! Sorry for small critique.