I'm going to have to tell it like it is: that is quite hideous.
The style of art you have chosen doesn't work when you spend little time on a drawing. The proportions are all wrong, try using a reference to improve the shapes and sizes of body parts. The colours are also wrong, I believe walrus' are grey.
However, the shading isn't too bad, their is potential in your art and if you practise you could end up with some quiet cute pictures. Work at it. Good Luck.