The picture is known as a avatar. You can go to Settings and you should then see Your Profile.
Scoll down until you see My Avatar. Then click on Upload My Picture. Here is the catch. The picture needs to be 85X85 pixels and no larger than 7KB. If you have a favorite photo and don't know how to resize it then send it to me. I will resize and send it back.
Most of my airplanes are 98% are biplanes. Biplanes I have on the building bench are an Ace All star bipe and a Aerolock Pitts M12. Biplanes on the building backlog are the Pica Jungmeister, Krier 1/3 scale great lakes, Krier .40 great lakes. Sig Hog Bipe, CG Ultimate bipe, , Bel Air .60 biplane, and a SIG Sun Dancer waiting for me at the Hobby Shop. Flying bipes are a Bel Air .40 Biplane and a Sig Mini-plane. Does that answer your question?

I hope my wife doesn't see this message.