Changing canvas size

This is always 800x600 - is there any way of making it larger to accomodate a more heavy weight file size? I'd like to print some of my FP images on bigger surfaces and I'm concerned the quality will degrade. Cheers

As you were - I've figured it out. Honestly dead simple and I never saw it!

Hi Suzanne,

I am happy you managed to find the setting! :)
For all users who see this thread - to create a new file with custom dimensions, go to File menu -> New and set your file's size in pixels.