A sculpture made out of Lego is not a recipe for making that sculpture. A photo of the sculpture is not a recipe. You can't "clean room" copyrighted works, if

A sculpture made out of Lego is not a recipe for making that sculpture. A photo of the sculpture is not a recipe. You can't "clean room" copyrighted works, if you coincidentally made an identical plane (same parts) without having ever seen their plane or instructions, you could still be infringing on their copyright. There are limits, just as you can copyright a story but not a sentence, there are likely combinations of bricks that are too simple to be copyrightable. Copyright holders can grant blanket permissions for use of their works, or derivatives, with certain parameters. What you're going to do with your copy of a work matters, that's where fair use (or "fair dealing" in some nations) may come in. Whether commerce is involved matters. Some things are technically copyrighted but are considered to have no value; a court may not grant damages but could still compel the defendant to stop distributing the work.