i travel quite a bit since i work for United. I take to to really take in scenery and understand how it functions, lighting etc. i can draw it effortlessly, but to create it seems to give me isses. Maybe im thinking/creating process is wrong... i tend to try and see the whole picture before i have anything down.
The creative brain is like a dog. You can't force it to do what you want, you need to train it.
Just so you know, the conscious mind can only process 40 points of data at once. The subconscious can process 2 million points. It's a matter of building a relationship with the part of the brain you can't directly control. Feed it with info, consume wild ideas, practice technique, and see what your brain spits out. This takes a long time, so bare with it.
Other than that, there's not much more I can say. It's a strange process.