yo man! I'm totally diggin' those clouds.

You should throw in Air Man (Ga Taosenai) just for kicks.

It is wierd how a thing as simple as a cloud is rough to get out. So far, it looks like you colored the background then started erasing to make the form of the cloud.

I most likely use a white pen and color in the edges then use a marker to fill everything in before shading.

Recently, I've been airbrushing clouds. Going over on layers and leaving some background spots in to make it look like the shading in the clouds.

It looks like a deformed snail. Hehehe, I sure love interpreting clouds. X3

Looks pretty good, although it looks more like a smoke bomb went off than a cloud, but thats what practice is for!

Hehehe, pretty awesome cloud man : D
Try and make it a bit fluffy around the top : ).

Little tip bro.
Backgrounds, as stressful and painful to get to them, it's best to TRY and make them fun.
Do landscapes, draw more background objects and such and work with lighting and atmosphere/fog : )

Lately, I've been trying to do more and more backgrounds to make it feel more "natural" than a chore.
Use references and stuff for trees, buildings, etc. Do super quick sketches of backgrounds, slap in a simple perspective, build on it.
Background detail doesn't come, man... you gotta make it >: 3.

yeah my brother in law who works in video games he just told me that if you suck at some thing just keep practicing.