Ivana Guljašević is a young Croatian author who has been working in the field of literature and animated film since 1995. From the very beginning of her career the comics she drew were very successful and in time she started to collaborate with more and more different authors of children's literature by illustrating picture books. Soon she became the author of her own picture books which are growing in number and she enriches Croatian children's literature with new picture books almost every year. Moreover, since she started illustrating picture books, the author is known for her characteristic style and use of intense colours which are attractive to the youngest readers. In this study I will conduct an analysis of text, illustrations, and their mutual influence in several Ivana Guljašević's picture books (Kako je krokodil Marko pronašao svoj dom, Čarapojedac, Čovječuljak snovuljak, Malo kraljevstvo, Drveni neboder, Tri strašna zmaja, Amo-tamo and Lude želje). After the analysis I will also try to determine which picture books are appropriate for use in childhood educational institutions and which age of children they are suitable for.