Alicia,
For sewing leather purses, clutches, handbags etc you'll need a cylinder bed, walking foot machine capable of sewing about 3/8" max thickness. A walking-foot or triple feed is needed when sewing multi layered leather to keep your materials from slipping and for feeding thicker material. The Janome machine is a home sewing machine that is not designed for sewing leather and its on-board motor is not powerful enough to withstand long term use.
Visit the sewing machine forum if you need more information or feel free to give me a call for some free advice!
Thanks,
Ron