(I do more than just Steven Universe, by the way. XDD That's just the kick I've been on this past while)
Below, I have put my rough prices for a commission. Depending on what you want, we could negotiate the price.
When working on a commission, we discuss what you are wanting in the image, and set up a price. Once the payment goes through, I will complete and send you your piece.
For larger images (multiple characters, background, etc.) I will draw up a simple sketch and get your OK before expecting payment and completing your image.
Prices listed include ONE character in the image, and a basic single-colour background.
Basic sketches are $10
Line art is $20
Flat colours are $30
With shading is $35
(Below are additions, added onto your price above)
Simple background +$10
Detailed background +$20
Additional character(s) +$15 each
$30 image examples
Because the top left image is technically just the same character mirrored, I wouldn't charge for 2.
The price of each piece would just be for the flat coloured image, $30 total.
$40 image examples
Flat colours ($30), and simple background (+$10)
$45 image example
With shading ($35), with simple background (+$10)
$65 image example
These would be coloured with shading ($35), 2 characters (+$15 for the second character), and a detailed background (+$20).
Each commission is different, though, and I am willing to negotiate the price!