Writers Block Forum I need some help

Keep starting and restarting this poem. I want it to be about fresh new beginings, being soiled by a dirty past. This is as far as I've gotten; The sunlight streams throught the window Crisp, clean and fresh But if you look closer There is dust waiting below the light Lurking and floating Forgotten but not erased   This is as far as I can get. I don't want to stop there, but I seem to have hit a road block