20 - Something from My Room

Even long sunny days have insufficient light at some point, sadly. (real life study)

19 - A Couple

Ellie and Joel from The Last of Us. 

The Last Of Us © Naughty Dog/Sony Computer Entertainment

18 - A Place I Want To Visit

Wreck of the SS America - Fuerteventura, Canary Islands. (photo study)

Wreck of SS America reference photo © Pedro López Batista

17 - An Actor

Steve Carell. (photo study)

Photo reference source

16 - A Character from a Game

Raiden. Bzzt. Raiden.

Raiden © Warner Bros. Interactive Entertainment / NetherRealm Studios

15 - Some Sea Creatures

Deathstreamers. Here you go.

14 - My Favorite Cartoon Characters

Well I divided them into two teams, each featuring a brainy and a brawny character. Here you go: Majin Vegeta & Dr. John A. Zoidberg Vs. Dr. Thaddeus "Rusty" Venture & Captain Leslie Hero. (photo study)

Reference Vegeta photo © Toei Animation/FUNimation
Reference Zoidberg photo © 20th Century Fox Television
Reference Dr. Venture photo © Williams Street
Reference Captain Hero photo © Double Hemm

13 - A Fairy Tale

"Huge Red Riding Hurt" - a fairy tale for wolves.

12 - My Favorite Flower

This is Caleana Major, also known as the Flying Duck Orchid. Don't ask. Just be glad it wasn't Puya Chilensis, the Sheep-Eating plant. (photo study)

 Caleana Major reference photo © Michael Prideaux

11 - A Musical Instrument

Done this trumpet (photo study).

Trumpet reference source

10 - A Character from a Book

It's Sandor Clegane (the Hound) from A Song of Ice and Fire.