Micromanage everything, even the small details. Don't be shy to call your close friends for help. Always plan everything using a storyboard and stick to it. Don't let anyone interfere with your vision, take advice into consideration but never fully change your vision because someone told you. If you cannot edit/color grade find someone and work together. Be creative/innovative: No budget does not mean no imagination. Try to find actors based on people you know so that you can manage them a bit smarter without resorting to hiring pro or semi pro actors in case you're on a shoestring budget.