Is it possible to make $50 per day?

I've been on fiverr for a little over a month now, and have earned around $300. I am lucky in the fact that I get orders every day, but It would be a dream to make between $40-50 a day doing this. The gigs I have up don't take me very long, maybe around 20 minutes each. Is it possible to get 20 orders a day?

I'm a substitute teacher but now with summer vacation starting, I will have no income coming in which equals to being broke. I can live on about $200 a week, otherwise I'll have to start the summer job search. Thanks guys!