@hayleyannececil -- first off, your yeti is adorable! Love how you're saying so much with so little.
There's something charming about the "no lines" version. However, the values are so similar, details get lost and the neck fades into that darkest part of the swash.
Being a fellow line lover, there's also something nice about the lines, as they define the shapes and bring the character forward. But I agree with @Laurel-Aylesworth-0, perhaps instead of having stark black lines, you lighten them or color them?
Really sweet piece, and I love how you're playing with shapes in the composition!