I'm pretty sure I made the cheeck a little to big and I think the neck is also, but other then that I think it's fine, I think... Basically a saber tooth cat can be any big cat with a big tooth(since we don't really know how they look like) Its usually better to use a tiger as a refferece and then add the gaint tooth. Here are some good references.
Mountain lion it doesn't have as much fur or visibel wiskers like the tiger does so it's easer to see the anatomy of a big cat.
Tiger -This tiger picture is a very good side view, but it has a lot of fur and stripes, which can make it hard to draw out.
And last the saber tooth tiger skull, you can use this to help you know how big the tooth and jaw line really is.
well hope this helped



