With modern technology, you no longer have to use only stickers sold in stores to decorate your bike. Using your computer and printer, you can print your own stickers at home. Buy printer decal sheets from an office supply store, but make sure you buy the kind made for your type of printer.
Look for images you want to use for stickers. Visit sites such as vector-arts.com and istockphoto.com's vector illustrations section to find images. If you have a scanner you can scan paper images, including your own drawings. Make your own designs using graphic-design software such as Corel Draw or Microsoft Paint on your computer.
Use your program of choice to set up the sticker page. Position the stickers where you want them to print on the page and make sure they are the size you desire.
Remove any regular printer paper from the printer's paper tray. Insert a single sheet of decal paper and send the print job to the printer.
Allow the ink on the decal sheet to dry for 5 minutes before removing it from the printer. Cut out the stickers using scissors or a utility knife.