On the last level, but stuck! There is a big brain thing you need to add 3 stickers to and I've done 2. The items I have are the tomato cans and spaghetti but can't find anywhere to put them. Does anyone know of an online guide? Nothing at gamefaq.
I tried sticking them on the cannon but it did nothing. I'll have another try tonight. Bit surprised that there is no walkthrough for this game seemingly anywhere.