Rather than sewing up zipper to you tote, if the design of your bag allow magnetic snap, why not use it ?
Here is the step on how to install the magnetic snap.
A magnetic snap set should have 4 items as shown below ; one half of the snap is magnetic, the other part of the snap is metal and is 'attracted' to the other. They click together to make a closure and they are applied at the FRONT of your bag.
The other 2 pieces with holes are the secure discs and they are used to secure the magnetic button to its position. These 2 pieces of discs are used at the BACK side of your bag.
Apart from the magnetic snaps, you will also need
- a water removable fabric marker (or tailor chalk)
- 2 pieces fusible interface (slight larger than the magnetic snap)
- 2 pieces of fleece about the same size as the fusible interface(I used my batting in this case).
- Embroidery scissors.
- A pair of pliers
From photo below, assuming the 2 red fabrics are fabrics of your bag that you want to install the magnetic snap. After measuring the position to place your magnetic snap at the front of the fabric, , iron on the fusible interface to the BACK of your fabrics. Mark where you need to make 'tiny' little holes for you to insert the magnetic snap prongs through the fabric. Use these marks as a guide to where you need to make very small incision using your scissors.
Cut very tiny holes on to the mark. Be very care as you only need very small hole.
Apply the same thing to the other fabric. Next, Push the prongs of the magnetic snap through the incisions.
Place the fleece (or batting) onto the prongs.
Then place the disc onto the prongs. Using a pair of pliers, fold the prongs as shown below.
Apply the same steps to the other half of the snap to complete the full task.
Sample example, here is how it looks like on your bag.
If you are interested to order the above snaps, please visit my Etsy. ^v^