I've been taking my images to print for 40+ years (yep, I started printing when I was 12) so I know what I'm doing on my end. I work on very expensive, color calibrated monitors to ensure that what I am seeing on my screen will match my prints.
That being said, most customers are not using calibrated screens and therefore you might see a color shift when you get your print in person.
If you have a newer phone, you are good to go. Those screens are beautiful.
If you have a newish Apple laptop, that should be fine for color rendition.
If you are viewing this website on a 10 year old PC that was $150, you will never know what the real colors are on any websites, not just mine.
Also, if you adjusted your screen from default settings, there might be a slight variation as well.
But don't worry, if you get your artwork and are unhappy with it for any reason, just email me to make things right.