Anatomy:

• Hands
• Neck
• Shoulders
• Men's faces
• Ages
• Ethnicities
• Back of head
• Hair types
• Eyes
• Fingers
• Feet
• Knees
• Elbows
• Collarbone
• Chest Muscles
• Back Muscles
• Profile silhouettes
• Arms male female
• Legs male female
• Stomach sitting, standing, bending etc

Artists:

• Singer Sargent
• Loomis
• Bridgman
• Mullins
• Kent Williams
• Glen Orbik
• Henry Yan
• Kekai Kotaki
• Zhang Lu
• Sterling Hundley
• James Jean
• Nakamura Asumiko
• Amano
• Obata
• Klimt
• Lipking
• Mark Burmingham
• Takehiko Inoue
• Kidchan
• Hwei
• Algen and Jana

Other:

• Leaves
• Roses
• Flower/weed types
• Wetlook
• Water
• Cloud shapes
• Guns
• Gears
• Clocks
• Asian motifs
• Antiques
• Laces
• Clothing folds, different fabrics
• Drapery
• Weapons
• Celtic knots
• Superhero comics
• Ships
• Fans
• Kimono
• Wind effects
• Shoes
• Umbrella
• Lanterns
• Jewellery
• Pants
• Jackets
• Buttons and details
• Wings
• Construction lines/forms for body
• Chains
• Panelling layouts, reading flow
• Composition
• Ukiyo-e
• Watercolour
• Graffiti
• Tessellation
• Headphones
• Trees
• Violin
• Tattoos
• Hats
• Caps
• Men's pants

Literature:

• George McDonald
• Italo Calvino
• Antoine de Saint-Exupery
• Shaun Tan