If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
In this game you are designing bouquets of flowers. If you're playing in story mode, there'll be a customer that will tell you what things he/she likes and what things he/she doesn't. You'll know it by the symbols in the right hand part of the screen under the customer. Note that if there's an item with a sad smiley next to it, it means that the customer doesn't like this item. If there's a happy smiley, the customer likes it. Add the items the customer likes and avoid those he/she doesn't like. Rather than that you can use any items you want and arrange them using various tools.