UPDATE: I now have a personalized pdf pattern available on Etsy! For a few dollars I can do the work for you and email you a pdf with your teacher's name on it. Check it out!
You do the personalization step right after you've constructed the pencil front, and right before you sew the back, front, and InsulBrite together. If you're brave you can hand write onto the fabric, but if you're handwriting challenged like me, here's the cool dashed print font for free. I used Adobe Illustrator to curve it and also created the three lines. This can be done pretty simply with most editing software. Print off the name and make sure to mirror the image. I traced the name on the paper with my favorite Sulky Iron-On Transfer Pens. Here's what it looks like transferred onto the fabric:
Next use embroidery thread in red, blue and black. This only requires very simple backstitch and running stitch. Good luck!!
And a thanks to CraftGossip.com for showcasing this post!
I love my teacher gifts, you can see more here: