Name Explanation
Acting The ability to be someone you’re not.
Aesthetics For example Fung Shui are Aesthetic practitioners.
Architecture The design and construction of buildings, a historian or designer.
Artist This is one of Painting; Sculpture; Performance; Installation etc. etc.  Further specialise the development for a +5 Bonus for specialisation.
Assess Value Specialist knowledge of a class of items worth, jewellery, antiques, drugs, (medicine or illegal).  Specify the class of items.  Further specialise the development for a +5 Bonus.
Body Art Tattoos, piercing and other ways to adorn your flesh.
Conducting Control of an orchestra.
Drawing How to draw in a given style, specify.
Meditation The art and practice of calming the mind.
Mime No, if you don’t want to end upon space or in a scorpion pit, by order of Pratchett’s Patrician.
Mountain How to grow a mountain.  For comedic purposes.
Performance Knowing how not to make a fool of yourself on-stage, not Acting, may be Specialised.  May take +3 Bonus if called upon to Act.
Play Instrument Must be Specialised.  (General Woodwind, for example, but virtuoso performances are given only by those who practise one instrument as a rule, so second level specialising attracts a guarantee of no penalty, and third level specialising restricts the player from playing anything else, and specifies that the character practices at least four hours a day.  Third level attracts a +5 Bonus while this happens.).
Poetry Putting words in specific artistic styles.
Seduction How to lead someone on sexually.
Sew Hand or Machine Specialises essential, further specialising desirable.
Sex Appeal Unlike seduction, this Development is not rollable, because it is not conscious, once taken, it used by the GM for a passive test against a (Typically) NPC Wit to check that the NPC will not cooperate more for the sake of the person standing next to them.  It cannot be “used” as a typical development, to “use” it, you must have the Seduction Development.  The two can be a powerful combination in the right circumstances.
Singing How to follow a melody without hurting ears.  May be Specialised.
Story-telling Once upon a time…
Whittling Carve wood into interesting shapes with a knife.