The NEXT step is to speak with my friend Sarah, who's fluent in Welsh and comes from Anglesey. Now THAT...THAT will be absolutely terrifying! She's not only fluent (intimidating), but also a Welsh teacher (terrifying)! Yipes!
I'm very lucky because my best friend and soul sister is a fluent Welsh speaker, I'm trying to be good and speak more Welsh with her now, but I'm only getting to the end of course one now so there hasn't been that much that I've been able to say. However, the reaction I get from her when I say something in Welsh is usually something like this:

with her expression saying "I'm amazed you can say that!"
So I really hope you get the same response from your friend! It's really good for your confidence and motivtion
And besides a good teacher (and friend) should be encouraging.
Also, as has been mentioned, keep in mind that if she does correct anything or would say something in a different way/pronunciation than what you've learned, that happens with my friend too, and it's just regional differences

*Edit:
Mostly I just stress over the fact that I don't have a huge vocabulary, yet. I know that will come, especially if I'm active in speaking with others, but it's definitely a frustration at this point.
I very much agree with this!! But with this there is a huge advantage about talking to my sis, cause I get to drive her crazy asking "what's that in Welsh? Oh, and that word, and that word, and this word..." and on and on I go

Although one has to know when to stop, remembering it's an investment for the future keeping them happy and healthy, if they start gasping for air, sighing heavily or turning blue, you've gone too far.