JULIA  Come, shadow, come, and take this shadow up,

For ’tis thy rival. O, thou senseless form,

Thou shalt be worshipped, kissed, loved, and adored!

And were there sense in his idolatry

My substance should be statue in thy stead.

I’ll use thee kindly, for thy mistress’ sake,

That used me so; or else, by Jove, I vow,

I should have scratched out your unseeing eyes,

To make my master out of love with thee.

[Exit]   (4.4.183-191)

And so Julia prepares to take the picture—not a miniature, from the way she’s talking about it—to the faithless Proteus. Come, shadow—she herself is a shadow, not herself, and an actor playing a part, a pale imitation of her true identity—and take this shadow, the painting, up, for ’tis thy rival. This is the competition alright. O, thou senseless form—she addresses the picture—thou shalt be worshipped, kissed, loved, and adored! He’s going to LOVE you, in every possible sense! He’s going to treat you as a goddess and bow down before you! And were there sense in his idolatry—if he weren’t being a total fool in treating you like that, if he had a better idea of what love actually is, or could be—my substance should be statue in thy stead. He’d be offering his devotion to me, my actual self, not an imitation, but the real thing. (Pathetic, deluded man.) (But she knows that she’s still deluded too; she still loves Proteus.) Whatever, I’ll use thee kindly, for thy mistress’ sake, that used me so—I’m not going to take my feelings out on Silvia’s picture, no matter how much I envy it, because Silvia was kind, both to ‘Sebastian’ and to the (as she thought) absent Julia. Or else, by Jove, I vow, I should have scratched out your unseeing eyes to make my master out of love with thee. I’d have defaced this wretched picture! Not that it’d do any good…

And that’s the end of the scene, and the fourth act. Valentine is in exile with the bandits, Silvia is planning to run away, Proteus is being a creepy mad stalker, and Julia is in disguise, far from home, abandoned and forlorn. Crab, one assumes, is magnificently unconcerned.