7 That to all ladies, which have it professed,

to > (?? One possible reading moves this word to the next line: "Need but to behold …" Alternatively the "Ladies" may share with "pourtraict" the verb "pourtrayd") professed > pretended, laid claim to

8 Need but behold the portrait of her heart,

portrait > image

9 If portrayed it might be by any living art.

300.2

But liuing art may not least part expresse,
2 Nor life-resembling pencill it can paint,
All were it Zeuxis or Praxiteles:
4 His d{ae}dale hand would faile, and greatly faint,
And her perfections with his error taint:
6 Ne Poets wit, that passeth Painter farre
In picturing the parts of beautie daint,
8 So hard a workmanship aduenture darre,
For fear through want of words her excellence to marre.

1 But living art may not least part express,

least > [the least] express > represent

2 Nor life-resembling pencil it can paint,