I understand the fear factor. My husbands mother is a quilt artist and has been quilting for more than 80 years. Seeing her work is intimidating. I also know myself. I am my worst critic. So... here's my advice, from one beginning quilter to another:
Think about some of the things I've learned recently. They really help.
1. Take a deep breath.
2. Take a class and drive the instructor nuts (like I do with questions, questions, questions). I really pity the poor person.
3. You can always resew (is that a word?) a seam.
4. You can always recut a bad piece.
5. Your seam ripper is your friend (mine's name is Jack).
Ready yet? Oh, yeah. Don't forget to laugh at your mistakes. Mine can be really funny.