"I haven't seen such an artist like you before that is full of passion with everything you've/ they've / she's done."
Assuming that the artist you're addressing is female, all three choices are acceptable. However, In US English, the sentence might be better phrased as: I've never seen an artist like you before, who's so full of passion about everything you've/they've/she's done.
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Assuming that the artist you're addressing is female, all three choices are acceptable. However, In US English, the sentence might be better phrased as:
I've never seen an artist like you before, who's so full of passion about everything you've/they've/she's done.