here are some tips from the drawing and not on the drawing:
do a lines and color layer, it makes it a bit more easier to do color first and then add lines
draw back legs before the tail, that way its a bit easier
if your doing a cat do the ears up
make the lines brush size 4 and smoothing size 55
don't be afraid to add some detail, try to add inside of the ears and eye brighting
try to do circles for the inside of eyes
hope I helped!

