Definitely keep an eye on the temp of your blades, they can heat up very quick. Check by touching the blade to your inner arm or cheek.
Also, are you keeping the blade flush against her skin? Shaving at too steep an angle can cause major razor burn.
She looks cute! I think you did a great job, especially for your first time. I do have a few tips, if you don't mind.

Fold her ear back against her head and shave all the way to the inside of the ear (carefully, that inner ear is delicate). The face line should form a triangle: from the inside of the ear, down to the throat, and straight across from each ear to the corner of each eye. That gives her improved air circulation for her ears, and also separates the face from the neck for an elegant look.
I hope that helps. You should have a lot of fun grooming her, she's very pretty! You should see some of the clips my poor Poodle had when I was starting out! You're off to a great start already.