Hi Mona,
Welcome from So Cal. I am a beginner like you (one year quilting) but i have learned my lesson not to buy exactly how much my quilt pattern needs. I have done mistakes along the way and when i went to buy the same fabric it was gone :cry: so i had to either take some parts or change the whole size of the quilt (forget about the disappointment of course), so just add little bit of yardage to whatever the quilt pattern tells you and you can use it as scraps in other quilts.
Have fun and good luck.