you will need: cardboard or hard paper, compasses, cutting mat, cutting knife, witte tshirt, one or two cups of water, one or two painting brushes, red and blue fabric paint

take you cardboard or thick paper and draw three (or maybe four) cirkels
mine were sized: 5cm 8cm and 12cm
then cut them out carefully,
you want your cirkels to look like cirkels
don't throw anything away

this is what you'll have left and you will need it for painting

take your white t-shirt, put a thick paper of piece of cardboard in between it, i used my cutting mat, and then fold the adges to the back
put your stencils on the tshirt
you can check if they are on the right place with the leftovers

then start painting!
but be careful that you don't move your stencils,..
make sure to refresh you water and clean you cup and brush carefully (or use another cup of water and another brush) before you start with the second colour because you don't want to end up with a purple t-shirt.
+ watch out for stains

when you are finished painting leave it drying, the instructions on my paint said to leave it for two hours, this depends on what paint you use
once it is dry wash it the warmest you can(always wash and iron inside out)
when you are finished the paint can be a bit lighter.
If you want to you can paint it over again to make the color stronger/brighter
as you like, i just left mine the way it was

next: wear you tankgirl-tee with pride!