Hi-ya,
Project with title Social Media just appeared on my screen and i red your description "Hago ilustraciones, hago publicidad a empresas para redes sociales......"
I am dexterous designer with skills including Illustrator, Social Media Marketing, Photoshop, Social Networking and Illustration.
Seems like your are on the right place and i am the right person offering services for this, i have recently done similar project which you can check on this link:
https://www.freelancer.com/u/LetsDezign.html
Do you have any specific required dimensions ?