Yes, you can. You can shape the sago for the pudding by putting them into molds. You cannot use intricately shaped molds but can use something like cupcake tins or even scoop into large ice cube molds. But you would need to do this immediately after washing the starch from the cooked sago. The sago tends to set into the shape of the container they are placed in after cooking, so if you leave them too long in the strainer, you will end up with lumpy sago clusters when you transfer them to the mold. If this happens, simply run water through the pearls again to break them up and spoon them into the molds as soon as the water is all drained. Let the sago set for a few hours, and then remove them from the mold (with a spoon or simply by tapping the sago out onto a plate). Place them into your dessert cups and chill until ready to serve.