I'm newish so no expert yet but yes, your smiles could do with being a bit happier!
I have found I get better smiles using the reverse application technique. look up how it works on here and have a go. It has made mine so much crisper! I now use that technique every time, at first it sounded complicated but when i tried it a few times it really made sence. basically, you apply the pink then white, pushing the white down into the very corners of the smile.
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