I usually start with the background color. I wet some areas with water before adding the watercolor.
I then painted the dark green areas before working my way up to the lighter shades. Decided to add an extra butterfly on the bonnet. The final touches are always the highlights in white, and then any thin lines such as whiskers are inked in along with my signature. Once this is dry, I apply varnish for added protection. I use acrylic gloss varnish that really makes the colors stay vibrant with depth.
Original is available here: http://www.etsy.com/listing/72518402/original-watercolor-painting-siamese-cat
Prints can be found on my website here: http://www.amylyn-bihrle.com/
If you have any questions, please let me know! :)