How i make my story into the comic? Do i have to finish writing the whole story and then make it a comic? What do i do? Can anyone help me out?

People convert stories to manga in different ways, but it's usually best to have a clear idea of the plot/ending before you begin finalizing it. This doesn't mean you nessecarily have to have every panel laid out though.
Hope that helps :3

This question is too vague. Do you already have a story written?

I guess you should at least write the first couple of parts first

I'd say which ever is more convenient for you. If you don't want to draw the whole entire story at once, then I suggest doing something like a chapter or two and catch up on the drawings. I personally would want to just do a little writing, then drawing, but really its whatever suits you better.

You got to know what you're gonna draw before you draw it.You don't need to know everything you're gonna draw, but the stuff you want to get crackin' on in the near future. Last time I checked, most mangas (at least the big ones) are written up as they go.

This is how you make a story into a manga, you paste your creativity in steps 1 and 2 then increase the overall quality in steps 3 & 4.

thanks....yall very helpful...i appreciate that