writing a story

Sometimes I would would like to write a story, but I don’t know where I shall should begin. I have some scene on in my mind, but I don’t never know how I can fit this scene into a whole story. If I know the basics for a story, I think that the tenseness intensity ( I think this is what you mean ) is absent… So I always have a dilemma… and I rarely write anything something down because it often is a disappointment for me. It doesn´t work either  too if I write and write and write. Then I stop and reflect about  what I have written and I´m not happy with my work…
Maybe you can help me!

you write very well - be careful about using commas - I deleted the ones you didn't need.

Not sure I can help you with the content of the story but I can help with the English.

hi, gril ,please believe youself ! u can do it ! if u want to write a story ,please ask youself what u want to write,such as love , youth and so on ! to start write when u want to write . to keep a record about u think of .