Design some Fashion

Hey, I was wondering if I could seek your advice to solve an issue I am currently experiencing. I predominately use Photoshop in all aspects of my design as we didn’t have the luxury and/or emphasis of Adobe Illustrator at school. So I am now feeling the brunt of that. My problem is as follows: I can create great artwork in Photoshop but when it comes to printing it the printers require either in 300DPI or as a vector format. The past 3 years 300DPI hasn’t been an issue as I’ve managed to work around it in PS however the scaling of my work is now needed to be printed on bigger sizes and different garments so AI is strongly recommended for this. If you could provide me with an email address to send attachments of my work so that you can get a better understanding of what it is I am after. I have been advised that such a job doesn't and shouldn't really cost a great deal as it is a quick job however I do not have access to Adobe Illustrator so I am faced with this problem. There will be multiple projects that will need converting to AI vector so this will span a long duration for several jobs so regular work, so there'll be a lot of business. I have attached below the example of what I've tried to do in AI but what it actually looks like in PSD. PLEASE SOMEONE HELP! Kind Regards Sami