Humidity in Homemade incubator

[Chriswardens52]

Hello guys i was just wondering what i should do to get the humidity to raise up in my incubator it is 30% with a bowl right now any tips

 

[Emmalion]

add a washcloth into the bowl to make the surface area larger and maybe wick it out a bit. Sponges work too

 

[Emmalion]

Also I almost forgot