Character Creation - Character generation begins by first determing how many player points your character gets (this "player point allowance" is totally dependant on the specific game you are playing, as is your selection of potential races.) Then you select a Race you have enough player points for and give those racial attributes and abilities to your character from their selected race. Then you finish your character by selecting enough other abilities (and ability levels) to top off your player point allowance, and by filling out any other appropriate details.
Size - To get the PPV of the character's size, take that chacter's size minus his race's average size level, and, unless this difference is negetive, multipy it by 2. (So if a character is size level 12, and his race's average size level is 5, then the PPV of his size would be 14. On the other hand, if his race's size was 12 and the character's size was 5, then that character's size PPV would be -7.)
Reach - On the reach and stride PPV table, look up the PPV of the character's reach and the PPV of it's race's average reach. Then subtract the race's average reach PPV from the character's reach PPV. The new number is that character's PPV for its reach. For example if the character's reach is 0.9 meters with a PPV of 1, and their Race's reach is 1 meter with a PPV of 2, their actual reach PPV is -1.
Stride - In order to modify their stride a character may get Lame disability or Running ability.
Natural Weapons and Armor - List the character's natural weapons and armor from their race as equipment on the Character sheet. Add the character's Size bonus to their natural weapon power bonus.