Hi and welcome to DV! Your English is fine, don't worry about it! What you want to do is to increase your recall dramatically. If you wake up a few times each night, you'll probably have something to write down. You want to wake up when you're in REM or just after it at the end of every cycle. They're around 90-100 minutes long. You probably had a dream which you forgot. Always remember to write down a few keywords on some paper, that'll trigger the memory of the dream and you'll be able to remember it all in the morning.

Set up a goal or two and start visualizing, but what I think you need to do is to realise that it might take a while to get good at this. You sound a bit impatient, don't be! You have all your life to learn. If you're not the kind of person who can fall asleep easily then I suggest you focus on the other techniques. DILD and MILD are just as effective when used correctly.

If you have any more questions, don't hesitate to ask!