mjpEncinitas

If anyone can help me this board can. If you've made a professional tote and have some spare time perhaps you could help me figure out if I've done the right adjustments to the pattern. I'll certainly understand if no one wants to take this on. I won't use it at the size it is, so I need to enlarge it. I'll buy extra fabric so in case I messed up on the pattern adjustments....

Size of Tote now Size of Tote I want
15 wide (w) x 15 tall (h) x 6 side panel (D depth) 18 wide x 15 tall x 7 side panel
I know they say the tote is 18 wide but it isn't. It's 18 wide after you add on pleated pockets.
I'm trying to increase the width by 3" and depth by 1" Keeping the height the same.

Here is how I think I need to change the pattern. I've used the numbering system in the pattern

1. 15w x18 h moves to 18w x18 h
2. 6wx15.5 h moves to 7w x 15.5 h
3. 20wx3.5 h moves to 23 w x 3.5 h Educated guess on this one as I'm not visualizing it well.
4. 9wx9H moves to 10wx9h
5 no change
6 15wx8.5h moves to 18x 8.5
7. 20wx18h moves to 23w x 18 h another educated guess
8. 15wx 11.5 h moves to 18 w x 11.5 h
9 20wx 3.5 h moves to 23wx3.5 h
10 15wx6.5 h moves to 18wx 7.5h
11. 20 wx 7.5 h moves to 23 w x 7.5 maybe an educated guess
12. 15 wx9.5h moves to 18wx9.5 h
13 no change
14 9wx10 h moves to 10wx 10 h
15 no change
16 enlarge pattern piece by 1" in the middle.
17, 18 not using.
Thank you, Thank you.