He is modelled after Josh Hutcherson, and this photo was used as a pose reference.
To the commissioner -- I only realized I'd drawn in jeans instead of khakis after the fact. ^^; Hope this is still satisfying! Sorry for the long wait!
Like his shirt? You can buy one! :D -- https://society6.com/product/bite-me-t-rex_t-shirt#11=49&4=83&5=17
Character © schooldoorholder
Jurassic Park © Michael Crichton & Universal