it is indeed hard to say. For the most part yes but....

 

I remember seeing an episode of a cooking show where I was instructed to get out my 24" salmon pan. Huh? What?

 

I'm thinking there will be a part you need and don't have in GIMP, but who can say what it is or if it will even happen. Sorry I couldnt be more helpful, but without seeing the tutorial itself...