I know this sounds harsh but is for your own good.  We are here to learn and improve.  So I am a very blunt person.  Perhaps you did not know that Jim is a name for a guy.  Perhaps you like the sound but that's no excuse or reason to use it.  Maybe you spelt it wrong.  Is Jean the name you wanted?  In English this name is female but in French where it originally came from can be male and is pronounced as "zhon". Giving your a male name to yourself when you are a girl is just confusing to people.  Not to mention how seriously you want to learn English.  If you don't change your name, it shows that you are recalcitrant and therefore unteachable.  No one will take you seriously.  This is my heartfelt advice.  Same reason and logic in not having a male Chinese name for yourself.

First notebook entry: Introducing myself

My English name is jim,and I was born in Heyuan city,Guangdong Province.I am a little shy girl,but if I am feeling well,I will be a talkative girl.So if I talk many things to you suddenly,you shuoldn't be suprised.
I love to listen others to talk any interesting things,such as the news about the worldwide,the people,the games,the stange things that hadn't been explained,etc.I also like to listen same light music,and if you can introduce some for me,I will be happy.My favorite sport is climbing,I like to see the highest scenery.
It's just a simple introduce for me,and if you want to know me more,remember to make a friend with me,I will be happy to know you.

First notebook entry: Introducing myself

My English name is Jim and I was born in Heyuan city, in the Guangdong Province. I am usually a girl that is a little shy, but if you catch me in a good mood, I will be very talkative. So if I suddenly say many things to you, you shouldn't be surprised.

I love to listen to others to talk about interesting things, such as international news, new events in people's lives, games, and extraordinary occurrences etc. I also like to listen to soft music so if you can introduce me to some, I will be happy. My favorite sport is mountain climbing, I like to look down at scenery from the highest point.

It's just a simple introduction but if you want to know more about me, remember to make friends with me! I will be happy to know you.