Hi Claudia,
I'm sure you can appreciate that it's difficult to give advice without knowing certain particulars about a persons circumstances and background so please accept our comments as general suggestions.
You asked, "how do I tell my family that I don't wish to be baptized yet?"
I believe you can tell them in those exact words. Of course your tone of voice here is very crucial. It must be said in a calm,
respectable and non-arguementative manner. Remember nobody accepts changes over night, so you may have to repeat your position often. Perhaps others in your family or congregation of your age group were/are already baptized at your age ,thus setting the standard that your parents are looking to for you also. They may not at this time accept a deviance from the norm, but if you stick to your guns, eventually they will adapt to your point of view towards a later
baptism.
Then you said,
I want to be baptized to serve Jehovah, but i am unsure about being baptized as one of jehovahs Witness. why cant i just be baptized like it says in the bible? what can i tell my family? thanks in advance
I agree with you here that the scriptures do encourage Christians to be baptized. However
the WTS has made it so that JW's are also baptized into the Organization, especially in view of the current baptisimal questions.
Again if your unclear about 'belonging' to the WTS Organization (and I mean this in a VERY literal sense)then it would be wise to wait until you are more certain, before taking this huge step of baptism. The WTS claims baptism is only a normal progression in our dedication to GOD however baptism into the Organization binds you with many extra-biblical resposiblities exclusive to JW',and I think you know what these are.
All a person can say is he/she is not ready,
all the while revealing little by little what your true feelings are, and remaining hopeful that your family will accept you for who you are. At least if you should decide to leave the Org. they will not have to shun you, like they would have to if you were baptized and later disfellowshipped.
Wishing you happiness.
Your friend,
Martini.