theseOkay,usuallysuchsketchesallowtheartisttovisualizetheproportionsandtheshapeswithoutmuchattentiontodetailssotheseimagescanbeusedbypainters,architects,sculptors—anyartistreally.Andlargerenderings,sketchesofpartsof

Question

these
Okay,usually such sketches allow the artist to visualize the proportions and the shapes without much attention to details so these images can be used by painters,architects,sculptors—any artist really.
And large renderings,sketches of parts of the whole ...these can be helpful in the creative process when a huge image might be more difficult to conceive of in its entirety.
and large rederings,.these 指的是什么呀?
这段话如何理解?

Answer 1

these指的是sketches