Now the first thing you want to do, is to go on and figure out just what it is that you wish to design. This is the first step to making your stencil, you need to carefully assess the situation and decide if you want an intricate design, or a simpler one. You can opt to draw out your own design, or you can download and print one out based on what you find online. However, just be very patient when coming up with or finding a design, since you don't want to end up regretting your decision later on.
With the tattoo now on a piece of paper, you are going to have to start to cut it out. First go ahead and paste the paper with the tattoo on a piece of paper. Now once this is done, get yourself a paper cutter or knife. Now carefully use this tool to go on and cut out the outlines of your design. Make sure you are very precise when doing this, so that you don't end up messing up the design.
After you have the design cut out, you can now go ahead and trim the extra edges off the ends of the piece of paper, since you don't want a whole lot of extra paper just sticking off the edges of the sheet, since that could prove to be a problem once you try to use the stencil to draw out the tattoo.