Make several sections about your Ninja, some section ideas are:
Physical Appearance: Gives some details about your character's description.
Personality: Tell us a bit about what your Ninja is like, is he/she a jokester, or someone who is very serious you tell us.
Stories/Arcs: Gives some details about the Stories/Arcs your Ninja has been in and their role in it.
Abilities: These are discriptions of some abilities your Ninja has like "Great Speed" and/or "Weak Power" make sure to not make this section to "Godmodded" or else your character wil not be approved of by the Kage Council.
Stats: This is where your Ninja's stats will be added. The stats will be determined by a Kage and will depend upon your ninja's discription. Such as if he is good at "Fightning" he/she will have a strong "Offence" power.
Chosing your Jutsu
Well before chosing your Jutsu you must chose one of the Basic Chakra Natures (Water,Wind,Fire,Lightning,Earth) for your character. Then base your Jutsu off of that.
You can use Jutsu from the acual Manga/Anime or you can create your own by using images you find online or you can draw your own Jutsu.