Decorating your journal to make it look all spiff is encouraged but totally optional.

For Pokemon

Information about skills, abilities and flavor text can be found HERE

Information about nature and characteristics can be found HERE and HERE

Post 1: Title & Character image
Navigation also if you want (optional)

Post 2: Pokemon information
Species:
Type: ( it's element(s)
Ability:
Nature:
Characteristic:
Skill Set:
-
-
-
-
Flavor Text:

Post 3: Information
Name:
Age:
Height:
Weight:
Hair color:
Eye color:
Skin Tone:
Likes:
Dislikes:
Personality:
Strengths:
Weakness:
History:

Post 3: Relationships.
Character name and how they feel about them (assuming they've met)

Post 4 RP logs
Type of RP | Between what characters| Link | summary (optional)

Post 5 Misc
This is for your character's inventory as well as any art, music or other things you want to put in here.

Posts 6-13: Journal Entries.
Journal logs for your character about it's experiences and happenings

Post 14 Credits
Self explanatory

Pokemon Journal sample: Henry

For Trainers

Post 1: Title & Character image
Navigation also if you want (optional)

Post 2: Pokemon information
Trainer type:
Region: ( Unova, Sinnoh, Kanto, Johto, Hoenn )
Nature:
Starter Pokemon:

Post 3: Information
Name:
Age:
Height:
Weight:
Hair color:
Eye color:
Skin Tone:
Likes:
Dislikes:
Personality:
Strengths:
Weakness:
History:

Post 3 : Pokemon
This is includes Gijinkas in your party as well as your adoptables.
Although it is not required, you might want to display who is currently active in your party and who is in your "Storage"

Post 4: Relationships.
Character name and how they feel about them (assuming they've met)

Post 5 RP logs
Type of RP | Between what characters| Link | summary (optional)

Post 6 Misc
This is for your character's inventory as well as any art, music or other things you want to put in here.

Posts 7-13: Journal Entries.
Journal logs for your character about it's experiences and happenings

Post 14 Credits
Self explanatory