Hi i don't know much about how to attain lucid dreams.
but i tried it for about 14 days.

one day i got this dream :
i was going in a bus with some people(it was a hill station)
the bus reached some place and people started coming out of the bus and
i also came out as other people were coming out.
As i just moved out of the bus a lady came along with her kids and reminded
me that i have forgot something very important to my home(i dont rememember what i forgot)
then i told the lady yaa you are right and i started running towards the opposite direction so that i could get back home and bring back what i forgot.
as i was running i came across a market with lots of people and there was a two way.
and suddenly I saw a huge wave of water coming down from one of the road down the hill and everybody was scared and running away....i also chose to run and
chose the other way but as i ran the other way i A huge wall dropped on the road and blocked the road(A very huge wall)
and everybody seemed to be trapped i was among so many people with that huge wall around me.
at that point i realized that its impossible i am dreaming...this is all just a dream and i am inside a dream...
so instead of trying to continue with the dream... i started slapping the person standing beside me ..fighting with him..so that i could wake up from this dream.
i took some amount of fight with him ....and some other people in my dream.
finally i woke up.