Your English is just fine! : )
I came up with my story first, and the title afterwards. It took me a long time to come up with it, because I found it hard to think of a title that would fit the whole story, and not just the first couple of chapters. Eventually - after a lot of hard thinking! - I settled on Grassblades. It's short, easy to remember, and fits on a cover, but still good enough to fit the story I'm telling.
If I want to get more creative, and give longer titles to things, I can always give different titles to the different chapters of the story.
Finding a good title can be hard, so I totally sympathise with you! It's easier for me to give titles to stories after I've finished some sort of script or outline for them; that way, I know what they're going to be about, and it's easier to find a title that fits.