"To achieve something, we must take four steps: plan purposefully, prepare carefully, think positively and execute persistently," said English novelist and satirist S. Butler. In this context, it can be defined and described that an entrepreneurial project is an entrepreneurial venture in which I find important answers to all questions related to planning, starting, financing, leading, developing, organizing and controlling an entrepreneurial venture throughout its life cycle. In this final paper, which is divided into two parts, theoretical and practical, an entrepreneurial project based on the idea of Ana-Marija Pongračić is described on the example of butterfly farms. Butterfly Farm "Flying Flowers" deals with sustainable butterfly breeding. As I was deciding which topic to take to write my dissertation, I realized that it would be good to take a topic from an area of economics that fewer people are still in its infancy, since there is only one competing company doing the same job, that is, by breeding butterflies. The area of the town of Kutina and its surroundings is suitable for butterfly breeding because it has many unpolluted meadows and pastures, which are one of the primary habitats of butterflies, and in parallel this area has a favorable continental climate that is conducive to butterflies. The company will primarily be engaged in the breeding of butterflies of the uncle (vanessa cardui) species, and the target events for which the company will deliver are weddings and various family gatherings. Of course, like any company and owner with a vision for the future want to expand to overseas markets. The goal is to describe the development of business more precisely through the five-year planning period and calculate the financial stability of the company through the realization on the market, and for the purpose of full justification for future increase of capacity, expansion of assortment and market.