You can use both, even combine Photoshop and Illustrator. Illustrator files saved as PDF or ai are smaller than Photoshop files saved as psd, as they are vector files.
here for example a video, explaining how to combine PS and Illustrator How to use Illustrator and Photoshop together | Adobe Photoshop CC tutorials
It depends on how it will be printed and the type of graphic.
Firstly I'd get the details of the printer and ask for specification directly. That will give you a big lead to achieve the best quality. Don't presume CMYK is best for print, some printers will do the conversion from RGB better than you...
Either ai or psd should be fine, use what you're most comfortable with. Just bare in mind you may need to export it to a pdf or something that the printer likes.
I hope that helps.
The short answer is Ai and the longer answer is that you could use both, it just depends on what print method you're going with, design style and quantity ordered.
Here is a short course on how to get started with printing t-shirts:
I hope this is helpful!
If you're drawing something then stick with Photoshop.
Illustrator is good if you have a simple enough design that can be constructed with shapes.
So many opinions, but I'll add my two cents worth.
It depends on the content. If it is photographic with tons of colours and gradients, then Photoshop. I much prefer Photoshop for drawing and Illustration, and you did say you are more comfortable with it. You don't actually need 300dpi for fabric printing. Least ways not if it is something like cotton. A very fine silk might be different though. With jobs like that, I would always ask the printers what they need. If you are using one of those iron on ink jet sheets, then follow the instructions — I _think_ Carlie is a girl's name, so you should be fine with instructions.
Hi everyone, thank you all for responding and the many helpful answers.
I was able to get ahold of the print shop and the guy told me that I should be able to do the drawing in Photoshop in CMYK mode at 300 dpi and roughly around 2000 x 2000 pixels. Does this sound alright? I was wondering if there is anyway that I could make it sightly smaller to make it easier to send by email/download when the time comes (I'll most likely use Google Drive or We Transfer). I asked the print shop about this but he is yet to respond.
Also what file would it be best to submit it? the .psd file?
Thanks in advance.
Usually print houses want products as print ready PDF -files.
2000px square sounds ok. When you've finished the artwork, I'd keep the psd for yourself and just send a high quality jpeg.
They don't need the editing capability of a PSD and you may even get away with a jpg that fits in an e-mail.