Set a Goal
Your goal depends on what it is you need to budget for. Are you not making enough to keep your blog running? Or maybe you are spending too much on the supplies and it isn’t giving you enough income to live off of.
Figure out what it is and set the goal. For example, say you need to spend more on some lighting or backdrop. Just make a set list of how much you are going to take out of the profit from the business or put back into the business. Stick with this budget to keep everything under control.