Hello i wud be a dreamer 
That Dream Journal will definitely help you to improve your recall 
One of the techniques I like doing is lying in the place I wake up in, without moving or opening my eyes. Then I try running the dream backwards from the last point I remember.
Also after you have recalled a few dreams, if you notice something that comes up in your dream often, it can be helpful to try remembering if that was in your dream, I have remembered a few dreams doing that 
I’m sure other members have many other good ideas to help recall
There is a topic about it here:
the BIG remembering dreams topic part V
Good Luck 