Ruby

Artisan crafts is for handmade stuff this is a digital painting I think? So put it under digital art.
I think you need more sharpness overall it doesn't look like a crystal because the light reflections are too soft and dull, it reminds me of candy.
You can see a few of my quick watercolor sketches I did from real life reference, they're very rough (each took a few minutes) but you can tell they're crystals even though there's not much detail: [link]

The best way to learn how to draw crystals is to look at crystals. Sure, tutorials help, but just tutorials aren't enough. Try drawing from reference a bit