posting pictures will help,
1. go to www.imageshack.us
2. upload images from your pc
3. get link to image and type it here, I will embed if you can't(fyi you put [img] then the link here then [/img])
But given your question it sounds like you can probably sew them up, there's no harm in it, liners don't really need to be kept in a perfect condition imo, if they'll overlap and they don't pull themselves apart the boot/foot pressure will hold them in place, but sewing them won't hurt.