Thanks! I used a 15 on the bag and a 10 on the top portion. I decided to do that once I saw that's what the original pattern called for.
That'll be an awesome easter basket for your mom. Maybe I should make one for mine. she's constantly carrying things around in plastic grocery bags...
here's what the side looks like with treating each half as it's own piece.
it's a little weird, but i think it looks better than a seam.