During his childhood in rural Bangladesh, Rasha was deeply attracted to the carved designs on wooden doors, closets and bedstead legs. He used to cut dolls out of small clay moulds. And that was the beginning. He started with clay, but switched over to wood, which ultimately became his favourite medium. He later joined Bulbul Academy of Fine Arts (BAFA) in 1975. He said, "I did not continue my training at BAFA. I left after a year. However, there I got the scope to view pictures of western sculpture as well as many books on sculpture, which helped me express my own ideas through carving timber."

He always tries to maintain the harmonious relationship between man and nature by carving various reflections of human life out of dry tree trunks.

To quote him, "I want to touch the hard realities-- peoples' sufferings and struggle-- through bold expression. I don't emphasise the individuality, rather try to address the inner decadence of human beings as well as political turmoil through two or more three dimensional figures. I represent people as a class, as a result my sculptures have no particular front view, side view or back view."

On his working process Rasha claims that he never draws anything on paper before doing the carving, which most of the sculptors do. To quote him, "What comes in my mind I do it instantly on the timber. And I don't need to do any pre work exercise on paper."

Rasha's unique style of presentation has attracted people from the beginning. He won the National Award at the initial stage of his career in 1981. And in 1983 he was one of the three gold medallists of the second Asian Art Biennale for his work Life 2. He is the first Bangladeshi sculptor to win the gold medal in an international competition. Rasha won the National Award for the second time in 1986. But the path was not smooth for him as he had no institutional background. He said, "Even after winning the gold medal in the Asian Art Biennale, the artists who have institutional background used to dub me as an artisan, not an artist, as I had no academic background. But, my determination and creativity have taken me to this position. Now, some teachers of Fine Arts have approached me to teach their students on my style of timber carving."

So far Rasha has done 40 sculptures most of which are wood carvings. And some of these sculptures, mostly of the political leaders, are on metal. He said, "I believe art, science and politics are interrelated. That's why I've made sculptures of the political leaders. And my belief has guided me to do an innovative Hiroshima Sculpture Project, which can be an example of the inter-relationship between art, science and politics."

Rasha pointed out that the project is still incomplete. "Our ultimate target is to create a sculpture made from a 70 feet tree with a huge granite-made basement (120 feet × 120feet × 20 feet). Twenty renowned sculptors from all over the world will participate in the project. This is to take two years to complete with an estimated budget of Taka six crores."

Added Rasha, "The idea is simple-- science should be used for the betterment of humanity and nature, and not for destructive purposes. However, some scientists are creating weapons, which are capable of annihilating masses as well as harming nature. That's why I have used a tree as the medium for my Hiroshima Sculpture Project."

Besides carving these innovative sculptures, Rasha has held a solo painting exhibition. His paintings feature the spirit of the Liberation War, contribution of the political leaders, and the current political turmoil.