Welcome Wyzima to LD4all! 
A good first step would be presenting yourself to the community in the “hi, I’m new here” topic" ^^
It’s a common concern for beginners, but no, a lucid dream has the same properties of a dream in that sense: you are dreaming all the same, the only difference is that you know it and so you can guide it 
The “waking up” is purely metaphorical.
On the contrary, many people feel a lot happier and refreshed after they had a LD, so it’s even better than non-conscious dreaming! ^^
Don’t worry, you English is fine. Only thing, the last line would be better phrased as “it would be nice if you corrected my mistakes”. The rest is good 