2004- The Identity of South African artists- Fortis theatre, Holland
2013: Footsteps – Absa Gallery Johannesburg
2015: celebration of South African freedom- Beijing Biennale, China
2018- Dance and carve with my father, KKNK festival artist, Oudtshoorn
2018- Festival Artist at Innibos Festival Curated by Johan Myburg, Nelspruit.
2021- Solo exhibition at Turbine artfair titled Ebenezer curated by Prof Karel Nel
2022- Print the Carving, Cape Town Artsfair with Artists Proof Studio
Collen has won several awards like
2001- Absa L’atelier Top 10
2010- Absa Merit award
2018- KKNK New voice
2018- Kanna Award
2021- Recipient of Villa Trust in spirit of Jackson Hlungwani
Collen’s work forms part of several art collections like
Sasol
Absa
Unisa
Wits art Museum
Javett Centre
Fortis theatre
National Museum of China and many Corporate, Private, and public collections.
Collen as an artist enjoyed numerous media coverage for his work. Most notable recent coverage are on Art times, Africa Avant-garde on CNN, CCTV of China, SABC News weekend live and Newsroom Africa