/ic/ - Artwork/Critique

I feel like I'm not very creative. I always wanted to do some cool post apocalyptic sci fi stuff, like power armors and futuristic landscapes, but i just can't, there's a block in my head that doesn't let me doodle my ideas. I have the knowledge in rendering, perspective and linework techniques, i do studies all the time but i just can't create something with my ideas, not even with reference.