First, make a paypal account. It's hard to buy something online without a way to transfer money. Check out https://www.paypal.jp/

Then you need to make a price sheet, a guide to help commissioners understand the quality of work they are buying. As well as things you won't draw, have trouble drawing or even like to draw. So people won't get disappointed if you don't draw something to their tastes like cub incest. People actually like to commission what the artist likes to draw. I see you like to draw chubby characters, so I would like you to draw my bad boy bandit alligator: http://www.furaffinity.net/view/10569066/ rather than my feral version furry dragon here: http://www.furaffinity.net/view/13560980/

This is very important, as people can have often crazy characters and should charge extra for. You'll get characters with 10 legs, 10 meter penises, giant wings or a combination of all three. It is possible to get two side panels like this: http://www.furaffinity.net/view/9400914/ and charge more money for the extra work is ideal.

Once you understand the pricing for your artwork, next would to make a commission queue. A list of people who bought or are interested in a commission, that way the people who are awaiting a commission know their position in the queue and it is a helpful place for you to gather references of the commissioners. Ideally, limit the amount of picture

I know that online translators can be wrong, I can rewrite everything I said in simpler words that a translator cannot confuse. Send me a note if you need more help.

Thank you so much!

So, I opened a PayPal account immediately.
And what the remains to me is only to make a sample images for the price list.
I'll make those sample, rough sketch, line art, colored simply, colored firmly, and with background image.
And I have to give the price for the other case, for adult, and with the other characters.

You're welcome