I feel like you are reaching out for validation that isn't going to come to you from here. Is this good? Not really. Is it good for a first time? Sure. Should you pursue graphic design? Who knows? Do you want to? Is it fun for you?

Honestly for career work it doesn't matter where you start, it matters where you go. Practice, practice, practice. Everyone's first piece looks shitty and thrown together. But a professional artist portfolio is really inspiring to see

I would back down from throwing up beginner art and hoping for little praise here or there, and just work hard on your designs. Show us pieces that you are proud of, that you don't need to hedge with paragraphs of texts. We will praise those.