Portrait pp

Blazing away at a kids birthday party a couple of weekends back and got this shot of the partner in crime that I quite liked.
Thought I'd use it to give Lightroom more of a workout than I had so far.
I like the result, but there are a few flaws due to my hate affair with Photoshop's lasso tool. Is there a better way to separate an object from the rest of the image? I'm open to any suggestions.
Anyhow, here is the result so far. C & c welcome
Cheers, John

Thought I'd use it to give Lightroom more of a workout than I had so far.
I like the result, but there are a few flaws due to my hate affair with Photoshop's lasso tool. Is there a better way to separate an object from the rest of the image? I'm open to any suggestions.
Anyhow, here is the result so far. C & c welcome

Cheers, John