Need to sit my ass down, and work on some new art. How does one get rid of their creative block? 

Touch grass...
Do something new or completely out of your comfort zone. ...Talk to other creatives.
Get into the flow. ...
Do a monotonous task. ...
Allow yourself to fail. ...
Break it down into manageable chunks.
Then you pick up from where you left…

Try doing something completely different.
Use a reference but make it your own by changing almost everything about it after you build the foundation of it.
Consume other art for inspiration.
Just a few things I do when it feels stagnant