Settings I should put on my file for a clothing design print

[vast whale]

Hi I wanted to make a t-shirt design on photoshop
Are there any settings i should put on my file before making the design

[granite topaz]

How are you printing it?

https://www.gelato.com/uk/blog/types-of-shirt-prints

Lets assume it's one of the easy ones. - This gives you a max print area of about 32x42cm - or "A3 Size"