Lipoma removal has left large indent in my arm. Normal? Is there anything to fix the large caved in area on my arm? (photo)

I had lipoma surgery 3 weeks ago, and it has left a huge caved in area on my upper left arm. The incision is about an inch and a half. The lipoma was 6x5x4. It had some fluid build up and the used a needle to drain last week. It looked a million times worse. It is so caved in and looks horrible. Any help or suggestions or advice would be greatly appreciated. Been in tears over this.