Research trends to help maximize the possibility of sale. Anyone can design a tattoo, but not every tattoo will sell. Research what types of images are currently popular in the tattoo world. You can do this by searching tattoo design sites online or by visiting your local tattoo parlors for inspiration. Visiting parlors is also a great way to make connections with people who may buy your designs later.
Create your flash tattoo designs using your white paper and colored art supplies. Create designs that illustrate a popular theme in the tattoo world, but do not copy to closely any one else's design. Creating flash tattoos that are too similar to other designs will lessen the probability of yours being picked by a customer because it will not stand out in a crowd. Putting a new creative spin on a popular tattoo image like hearts, anchors, animals and various religious symbols will give you the edge you are looking for.
Assemble your designs into a professional portfolio that you can show to potential buyers. Using your plastic slip covers, laminate your designs and place them in a good quality three ring binder. This will serve as a portfolio of work that you can take with you to shops or tattoo conventions that will easily allow potential buyers to browse your unique designs and select one or several for purchase.