You will need:
♥ a pencil with a rubber on the end (mine's Cath Kidston of course...)
♥ a pin
okay now this couldn't be any easier, you simply push the pin into the rubber and voila!
For a smaller dotting tool I used to get a hair pin and open it out and the round ball bit on the end made the perfect circle shape! Also a cocktail stick works well for really tiny dots!
If you don't want to buy your own dotting tools then these are all great alternatives!
I got my dotting tools from eBay and they were around £2 with free delivery for five double ended ones! (just search for dotting tools in the search bar!)
*update* I was just sent a post by Jess on twitter which she has written with another great idea for a dotting tool! Check out her post here to see what her idea is!