To design your own heat transfers, use graphic design software such as Photoshop or any other software that you’re familiar with. Create the custom design that you like or you can download it from any free resource, ensuring that it fits within the dimensions of your heat transfer paper and according to the size of the t-shirt.
Once your design is ready, print it onto the heat transfer paper using a printer that you’ve selected from the above list, heat press it, and your transfer is ready.