Sleep Sack for Lily Constructed Entirely on the Serger (except for embroidery and top-stitching)

I am still trying to figure out how to replace the heart applique. I used two very dark fabrics for the bears, which was a big mistake. The blue looks awful too. Now they look like tigers or monsters. Also the colors don't harmonize with the whole sack at all. Now I guess I've learned an important lesson--choose the applique fabric carefully. I must confess I was just trying to use some scrap fabric I had at hand.

If I add another bigger applique on top of it, it's going to be too bulky. I thought about doing reverse applique, but I am afraid it's not going to be strong enough as that's the area where Lily is probably going to kick a lot at.

The old sack finally retired after 20 months. Lily wore it every day. Now it looks terrible and feels really stiff. It's been like that for a while, and I had been too lazy too make a new one. Finally, here it is!

They are both my own patterns. For the first one, I made it too short, so I decided to lengthen it and added the pink to make it interesting. This time, I didn't have to lengthen it, but I like how it looks. So I borrowed that idea, but this time, it's pink knit instead of fleece.

The last picture is the first sleep sack. The same fabric. Lily was 6 months and couldn't sit up yet.