Mistakes!? So what, It looks great to me. You did a fine job on that old kit. The British Racing green color was a great & traditional choice.
I think The kit was originally tooled in the 1960's, so those molds are a little old & worn.
Gunze Sangyo/Mr Hobby made 2 versions of the rag top EType Jag in 1/24. One was an all plastic curbside & they did a full detail multi Medea kit with a $100.00 price tag.