The best way to stay creative is to stay active, always work in your head. Look around and try using different products, you don’t always have to use make up products, like here I’ve used Poppy Seed on top of lipgloss.
Make mistake, create ugly things, you learn from your mistakes and you get to know what you like and what you don’t like. The hardest times for me to create is when I haven’t worked for a longer time. In a way I thought it would be the other way around, that I would create better things when I’m more relaxed, but no.