Alphabet Patterns:
Fillers

Keep in mind:

open heart

Line 1: 2, 2, 1, 2, 3
Line 2: 1, 1, 2, 1, 2, 1, 2
Line 3: Repeat Line 2
Line 4: 2, 1, 3, 1, 3
Line 5: 3, 1, 1, 1, 4
Line 6: 4, 1, 5

closed heart

Line 1: 2, 2, 1, 2, 3
Line 2: 2, 7, 1
Line 3: Repeat Line 2
Line 4: 3, 5, 2
Line 5: 4, 3, 3
Line 6: 5, 1, 4

check

Line 1: 3 (BC), 4 (LC), 3 (BC)
Line 2: Repeat Line 1 twice more
Line 3: 3 (LC), 4 (BC), 3 (LC)
Line 4: Repeat Line 3 twice more
Repeat from Line 1 again if needed

broken check

Line 1: 4, 6
Line 2: Repeat Line 1
Line 3: 6, 4
Line 4: Repeat Line 3
Repeat from Line 1 again if needed.

diagonal lines

Line 1: 1, 3, 3, 3
Line 2: 2, 3, 3, 2
Line 3: 3, 3, 3, 1
Line 4: Repeat from Line 1

tree
(Or a spaceship, maybe?)

Line 1: 4, 1, 5
Line 2: 4, 2, 4
Line 3: 3, 4, 3
Line 4: Repeat Line 2
Line 5: Repeat Line 1

(This was supposed to look like a...) star

Line 1: 4, 1, 5
Line 2: 3, 3, 4,
Line 3: Repeat Line 2
*Line 4: 9, 1
Line 5: 2, 5, 3
Line 6: 1, 3, 1, 3, 2
Line 7: 1, 2, 3, 2, 2
*Line 8: 1, 7, 1, 1

* Line starts with letter colour.

spiral

Line 1: 2, 7, 1
Line 2: 8, 1, 1
Line 3: 2, 5, 1, 1, 1
Line 4: 2, 1, 3, 1, 1, 1, 1
Line 5: 2, 1, 1, 3, 1, 1, 1
Line 6: 2, 1, 5, 1, 1
Line 7: Repeat Line 1

  pinwheel

Line 1: 5, 3, 2
Line 2: 1, 1, 2, 2, 4
Line 3: 1, 1, 2, 1, 5
Line 4: 1, 2, 1, 4, 2
Line 5: 2, 4, 1, 2, 1
Line 6: 5, 1, 2, 1, 1
Line 7: 4, 2, 2, 1, 1
Line 8: 2, 3, 5


Silence is one of the hardest arguments to refute. - Josh Billings