1. Treat your flower bulbs like your light bulbs
When you plant a flower bulb, you have to dig a small hole to plant it inside. Of course, everyone knows this. However, not everyone knows how you should place your bulbs inside the hole you just dug for it. The bulb should be placed with the pointy side looking upwards and the flat side touching the soil fully. If there is a gap between the flat bottom side of the bulb and the soil it's resting on, water can get inside that gap and likely rot the bulb.
To avoid this, treat your flower bulbs like your light bulbs. When you insert your light bulb in your lamp, you push and twist it in place. This is exactly what you should do with your flower bulb. Gently push your bulb in the soil and twist it just slightly to avoid any gaps between the bottom of your bulb and the soil it's resting on.
2. Use soap (yes, this is serious!)
Many small animals, like mice and squirrel, will smell your freshly planted flower bulbs, dig them out and eat them. Flower bulbs are a favorite snack among a variety of smaller animals. There are many methods to avoid this from happening, but arguably the smartest one is using soap.
When you plant your bulbs, just grind some soap on top of them. Then cover them up with a layer of soil, and grind some more soap on them. Finally, fill the remaining hole with more soil. This is extremely effective, and don't worry, soap does not have any negative effects on your flower bulbs. On the other hand, it does have quite an impact on the small animals that would seek to snack on your precious bulbs.
Firstly, the strong smell of the soap will cover the lighter smell of your bulbs, making it more difficult for any animal to catch the scent of your bulbs. Furthermore, the smell of soap actually repels most of these animals. Even if they do find your bulb and get through the first layer of soap, when they feel the taste of soap on your bulbs, it will surely scare your little thieves away.