Here's the schedule:
Day 1: Getting started - cutting and fusing pieces
Day 2: Starting Exterior of bag
Day 3: Finish Exterior of bag
Day 4: Make the Lining
Day 5: Finish the bag!
If you've purchased a paper pattern, you're one step ahead. If you have downloaded the PDF pattern, you'll need to print it. You may wish to only print out the pattern pieces and refer to a computer or mobile device for the pattern and sew along. Make sure the pattern pieces print out at 100%, or actual size. Once printed, double check by measuring the 1" test square. Cut out the pattern pieces and tape A1 and A2 together, overlapping the gray area; do the same thing for D1 and D2. I also find the cutting guide on page 4 really handy to print out, so I can check off as a list as I go.
If you haven't chosen your fabric yet, you'll need to do that. For this bag, I chose one single fabric for my exterior, but it works well to have the centre pockets as an accent fabric too. For my lining, I chose several coordinates and went with a brighter theme than my usual low volume innards. I like to cut my fabric first, before the interfacing, since it's prettier and more fun, and then when cutting the fabric is done, I tell myself I'm more than half done all my cutting! Gather your supplies. I use shears for the pattern pieces, and rotary blade with rulers for the rectangles. Do yourself a favour and change your rotary blade if you haven't done it recently. A fresh blade really does make cutting so much nicer, and reduces fatigue. I also like to have a few different marking tools. I like the chaco liner, the clover triangle chalk, and just regular pens.
Some of the rectangles we have to cut are probably bigger than the rulers you have available. Use 2 rulers together! In this example, I wanted a piece of fabric 15" wide, but my large ruler is only 12.5" wide, so I added 2.5" from another ruler.
To fuse the interfacing to the exterior pieces, make sure the interfacing is centred on each piece and use a hot iron. I find interfacing fuses best when I start at the centre and slowly work my out, with pauses and pressing, rather than a back and forth "ironing" motion. I always find fusible fleece difficult to actually fuse, no matter which brand I use. My best success is when I spray a bit of water before placing the fleece (on the wrong side of my fabric) and then placing the fleece and quickly flipping the pieces over and pressing from the right side of the fabric. I picked up a spray bottle at the dollar store and filled it with water and always keep it near my iron when fusing. If you're lucky/smart enough to have a steam press, then you've probably skimmed over this section since I hear that's the fastest way to fuse interfacing.