If you draw on a phone or a tablet, I would suggest getting a simple pen (not a drawing tablet pen or something but a regular touch pen). When I started dawing on my phone, it was much easier and I got way smoother lines.
When talking about anatomy in this piece, the back, near the stomach area is way too thin. The front right leg is way to thick in comparison to the left leg. And the hind right leg looks a bit broken. I won't go over all the pieces, but I would suggest looking at multiple references while drawing.
All in all, congrats on moving to digital art, don't put too much pressure on yourself, and the basic saying, just practice and have fun. :)
Spring Month: 2 
Night 
Heavy Rain Moon: 
