Do exactly what you are doing and repeat.
If ya did exactly twice what ya do, ya can expect twice the cash at the least.
Another thing ya might wanna fiddle with is diversifying.
Maybe ya do submits now, maybe ya put another hour into SEO.
Maybe define you're business model, or create a business plan and set goals.
Thats my honest reccomendaton.
OH, and ya goto love what ya do, to be truly effective
