That looks about right. Find one of the many good side-view pics for the best reference.
It would also be good to make the frames of the main front panel of the canopy narrower. Actually, same applies for the back window too. Right now they are so thick that they make the "glass" area noticeably too small. On the other hand it's too big in the side view. Adding the 'ledge' around each window would be a good move too.
If you do this, you would also want to move the canopy hinges outboard to be nearer the triangular gussets, for strength.
One other small fix would also help give it the right look - the downwards angle of the front part of the lower edge of the canopy is too steep. Look at your reference picture - if you slope it back more to match that, it will give it more of the character of the original.
Be careful with your new canopy that you don't make the top of it too wide. You won't be able to use the exact same side slope angles as the first one.
Good luck!