Hello there. I too am attempting to draw my fursona. The problem is, I have a hard time doing anatomy. Shading I have some experience with. This really depends on whether you are doing it on paper, or using a digital editing program like Photoshop or Gimp. I use Photoshop, and I love shading on it. Its really a hit or miss technique in my opinion. I suggest just keep at it and try over and over until you get it right. Art really isnt something you can rush. It just takes practice. If you do digital drawing and coloring, Youtube KaytotheLink. She has a three part tutorial on drawing, coloring, then shading a picture. I got a lot of help from the DreamKeepers Comic Youtube videos. The owners have a good video on shading and lighting with Photoshop. To really help you, I would need to know if this is a paper thing, or digital, or something else. I am still learning on paper, but I may be able to help either way.