I'm brand new to Painter (just purchased Painter X) and this forum.
I've been searching (without success) on how to create an image in Painter that can be printed to poster size (18x24) without losing image quality.

I've used mostly Illustrator for creating printed graphics using CMYK colors and 300ppi. (Files sent to professional printer.)

Any advice on how I set the resolution for creating an image of this size in Painter?
Or do I have to pull the Painter image into Photoshop or something else to ready for printing?

I hope this isn't way too beginner of a question to be posing. Thanks in advance.