Know What To Do, But I Don't.

I'm still writing my WH13 fanfics, I'm also working on my realism. Don't we all know that needs alot work. I'm also working on a comic/graphic novel for Charmed.
            I got a request from my brother, asking me to do the scene from 300, where the Persians are being pushed off the cliff. So I'm working on that. Next I'm going to work on a self portrait of myself. After that, I want to do a picture for Katy Perry's new music video "Wide Awake." It is a beautiful video. If you haven't seen it and it is a fan of hers, well here you go, www.youtube.com/watch?v=k0BWlv….
            This is where I'm going to need help. I don't know what I want to do. I do know that I would like to do an image from the video because its just that epic. If anyone that reads this has an idea, please let me know, and I just might do it.
             After all that work, I want to try to draw Joanne Kelly, who plays Myka Bering in Warehouse 13, again. I failed the first time. But I don't know what I want to do, Myka, Bianca from Dresden Files, or just Joanne. If you have an idea, please let me know. Because I need to work on my realism really badly.

Thank you for the help!