This is how you manually edit the hero's look caused by aging, alignment, growth:
(I did not originate this info, just compiled it, and hopefully made it easy to follow for new modders.)

{To Open CDefs; once you open the window on the right, single click "CREATURE/OBJECT" or
click the + sign beside it and click CDefs right under "CREATURE/OBJECT", I find the
second way much faster. Only 'Click Actions, Save Mods and Run Fable.' after all
changes are made}

Open up FE,
Under CREATURES go to 1470 - CREATURE_HERO.
Open the CDefs,
Scroll down until you see CHeroMorphDef,
Open CHeroMorphDef by clicking the first 'Links to (GameBINEntryID)',
Click CHeroMorphDef not the + sign beside it,
In DE9B0516, click [Del] in any box that has something you do not want,
Delete values with "OLD" or "BUMP" to stop the effect of aging,

Delete values with "WILL" to remove the blue will marks on hero's skin,

Delete values with "BLOND" to keep hair black(delete all "OLD" hair also),

Delete values with "MUSCLE" to stay small,
-In 4577F2CB you must delete hero_strong and hero_tall also,

Delete anything with "EVIL" and "ANTITAN" to remove EVIL alignment effects,

-Then in 718A793D you can delete Flies, Rays,and Eyes if you want,

-To remove horns:
Go to OBJECT,3519-OBJECT_HERO_HORNS,
Open CAppearanceModifierDef, by clicking Links to (GameBINEntryID),
Click plus sign beside CAppearanceModifierDef,
Click 67019D5C-Appearance Clothing Model,
Click 'Del' in all 3 of those boxes.
Click Apply Changes.
Click Actions, Save Mods and Run Fable.

-To remove baldness: (Works with any hairstyle)
Open OBJECT_HERO_HAIR_PONYTAIL_01(Or the style you like),
Open CAppearanceModifierDef, by clicking the first Links to (GameBINEntryID),
Click plus sign beside CAppearanceModifierDef,
Click 67019D5C-Appearance Clothing Model,
Change Rank to Disappear in first box to 1.1,
Click 'Del' in the last 2 boxes,
Click Apply Changes.
Click Actions, Save Mods and Run Fable.

-To remove the evil expression:
Still under 1470 - CREATURE_HERO,go to CCreatureDef,
Click the first "Links to (GameBINEntryID),
Click the + sign beside CCreatureDef,
Click F0F1CA81 - EExpressionType,
Click [Del] in the third box, EExpressionType [8] ANIM_HERO_FACIAL_EVIL,
Click Apply Changes.
Click Actions, Save Mods and Run Fable.

Delete the skin arrays with "TAN" in them, to remove GOOD alignment effects,
-Also in CHeroMorph, 1A37C090, Remove Good alignment changes by clicking
[Del] in the boxes for HALO and BUTTERFLIES.
Click Apply Changes,
Click Actions, Save Mods and Run Fable.