Welcome to TVPaint Community forums !

On TvPaint, I am planning on making one image, as if I'm using it like Illustrator, and need to print it out large 23.5 x 23.5 inches. For the project size, what would be the optimal height and width if I'm going to print it that large? As far as I know, TvPaint only tells me the pixels, not what it's going to turn out in inches. I need this printed image to look high quality, and not look like it was enlarged and pixelated.

Look up DPI. That's dots per inches. For a good print use 300 DPI. Do the math.

http://www.hdri.at/dpirechner/dpirechner_en.htm" onclick="window.open(this.href);return false;

Got it, thank you so much!