Whittock, Nathaniel: The Art Of Drawing And Colouring From Nature, Flowers, Fruit, And Shells: To Which Is Added, Correct Directions For Preparing The Most Brilliant Colours For Painting On Velvet, With The Mode Of Using Them, Also The New Method Of Oriental Tinting ; With Plain And Coloured Drawings (London, 1829)

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Having properly marked the space that each group of blossoms is to
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occupy, commence the correct drawing from the top, and draw each
blossom with a very light touch ; but, at the same time, with as much
attention to sinish as if it was to remain a pencil drawing, as the
grey touches of the pencil will materially assist in the veining of the
petals, when coloured.
The student will observe, by studying the copy, that each separate
group would make a pleasing subject for a drawing, and if the same
attention is bestowed upon them, and they are proceeded with in the
same manner, the whole will be highly finished, and easily connected
by the stem; and the student will thus lose all idea of the disficulty of
producing a complicated subject, as each group taken separately would
be a simple one.
The leaves of the apple tree are very like the rose, but the student
who has practised the fourth lesson, will have no difficulty in pro-
ducing them.
The upper group in this subject consists of four blossoms and three
leaves, and the student will find them so disposed that the dark part of
the leaf gives esfect, by contrast to the light part of the blossom. The
veinings of the leaves should be all properly drawn with the pencil, as
they will materially assist the colouring.
The second group consists of three blossoms, two of which are full