Keep in mind that not every character you create (in the event of a custom character) will be a master of their bending discipline at first. this is here to tell you how you can increase your skills. (just try and RP as if you were of whatever level you should be at, so no complicated bending for beginers)
Bending skill increase.
Before you can become better in your bending you must first find a teacher. then they will supervise your training.
Basic: any bender without formal training
Student: A bender that has just started training (1 paragraph)
Beginner: A student that has been training for some time (5 Paragraphs)
Intermediate: A proficient student (15 paragraphs)
Moderate: A senior student (20 paragraphs)
Master: A master of their bending (30 paragraphs)
These do not have to be done all at one time. You will keep track of your paragraphs in your character sheet.
How to RPBe sure to give enough detail in your posts that other people are very clear as to what you are doing with your bending. Example, if you want to do a complicated attack with water bending then say everything your body does and what the water does. I know this sounds like a lot, but it will make things go much more smoothly.
Just remember that there is such a thing as too much detail, such as saying what electrical impulses go through your body and what not. just say things like this.
Katara twisted her body and shifted her wait to the left, causing the water to follow her movments. She then snapped forward and the water followed, forming a whip to strike her opponent.