micro- The cylinders are good and I don't mind the unfinished vignette look of them. It's the connecting 'runs' (looks like a roofed wall) The roof (horizontal plane looks good enough for a sketch but the bottom of the wall as it contacts the foreground cylinder is either parallel to the roof's line...which gives the optical illusion that it does not come forward in space or actually is drawn closer to the line of the roof.
As two lines, that in real life are parallel, come forward in two dimensional space (your paper) the lines are drawn closer together as they go back in space and spread apart as the come forward in space.
This doesn't mean that you have to pull a ruler and guides in every time you draw...that would make sketching tedious But just follow a general rule of thumb that....Parallel lines spread farther apart when coming toward the viewer and converge as they go away from the viewer.
Things like the wings on you plane add an extra level of complexity because they are usually tapered from the fuselage to the tip but this is where you can roughly sketch a rectangle that goes through the body of the plane, in proper perspective and then draw the wing's shape on it. Do the same for the foreground wing, drawing it's shape to match the placement on the rectangle like you did on the background wing.
Keep at it, perspective is a really tough subject but when you get it, you'll get it