Since you've already been sewing for a while, I say find a pattern you like, pick out 'good' fabrics, and go for it! I think Debbie Maddy (Calico Carriage, just google it) has some really great patterns for 1st timers. (Based on personal experience).
I agree with earlier comments of learning the 1/4" seam. If your machine didn't come with a 1/4" foot - get one! you'll thank yourself for it!
Learn to cut accurately.
Do use starch!
Pin so seams meet.
Learn to use your seam ripper (you'll use it)
Be aware of when you 'stretch' fabric to meet/match.
and Most Importantly - have fun!
This forum is an excellent resource. If you need help understanding how to do a specific task or step...ask! You'll typically get several options on it! Please show some pictures !