I use to add lyrics to my felt board. I print the text on a special paper (you can buy it from Avery.com like I did or from other supplier) and then I use the iron to transfer the writing on the felt. You can transfer in this way a text or pictures. If you go online on Avery, you'll find some templates and texts.
You need: special paper for printing, felt or a T-shirt or something else where you want to appear your text / picture, and an iron.
In Word:
-type the text
-choose the size paper to be Hagaki card or Japanese Postcard (100 x 148 mm) if you want to print a small piece (like a normal Thank you card for example) not the whole sheet of paper
-for the first time use a normal paper to print the text and to check if everything is OK
-then insert the special paper, but first set your printer: go in Printer Properties, choose Finishig tab, mark Mirror Image - in this way your text will appear inverted; then print it.
Place your special paper on the felt up side down.
Set your iron - no steam and then press on the paper for 40 seconds.
Peel the paper. The text will appear on the felt.
Cut and sew the text.
Done.
Enjoy it.
Ema