You'll need:
Black t-shirt
Fabric Paint
Sponge brushes
Old toothbrush (No need)
Plastic plate (Just use some paper for the fabric color...)
Cardboard Optional: Glitter Bleach (No need)
To make a galxy t-shirt you could do anything with your own chosen colors or you are still deciding I will recomend the most galaxy is blue, purple, pink, red... So let's go! Anyway you can do with a shape on your t-shirt or a shirt or a crop top anything you have and is fabric even shorts.
Let's get back to the shaping you can use a triangle, cube, cross, oblong and a round. But you don't need to use the shape if you don't want to. But here's something that will make your fantasy paint on you fabric material. Just to understand the galaxy it's very sparkling place with a huge color on it so you don't need to use blue, red, purple or whatever those are what people are mostly using but you can be more creative and more original try yellow, orange or brown if you can.
And of course you don'r need to use a thoothbrush you can just use a paint brush just tapped it on!
Well I try to put on some bleach in a bottle or you can just flushed it on t-shirt without a spray bottle. Then let it dry. Using pretty acrylics colors (Or bright...) I went on mostly pink yellow and blue tones colors. But firstly I added white then the colors I was just tapping in on to make it more galaxy... with your sponge of course.
So when I was done or happy done I use paint brush and again used the white color and tapped a dots on it cause galaxy got a lot of small stars on it and then sparkle stars and let it dry..
Then I'm done it's really simple and the best cheap you can do at home.
Do not forget my quote use your imagination...
Thank you and again sorry for posting this for long time I hope you enjoy this boring reading with me.
I added a photo.
Don't forget to post me some photos and of course you can win something. Thank you Xautorsyou should get my present... She send me awesome bead bracelet she could now get my present I send her. So thank you for posting me this photo I will post in on the next chapter for the volunteers who got me some DIY photos they did. Really cool!