
Hey LightningPaw! Sure I can give you a few tips.

- Practice a lot! Try to draw everyday if you can. The more your practice sketching, coloring, etc the better you'll get. <3
- Try to use photo references for the subjects your drawing. Google is a really awesome place to find photos of big cats. Keep using refs until you feel like you have your hand trained to draw feline anatomy...even then, refer back to photos to make sure your still keeping everything where it should be.
- Study other artwork. Find out what you like the most about a certain artist's style and see how you can add that into your own style. :3

Those are three tips I always though were most helpful! Hope they help you out too!