I have weak, brittle eggshell nails and unless I use Sally Hansen's Thicken Up, I can't grow them at all. It helps a TON! Though my nails still bend. I keep them at a medium length and file them straight across. I like them this way, but I notice the corners break easily. That messes up the shape, but also the polish starts to chip after that. How do you shape your eggshell nails?

These are them right now:

And this is how I usually keep them: