I can only echo the above comments My first models back in 1950's were no better than yours in fact my first Albatros had silver tyres and paint and glue finger prints all over it. We've all made some models that we're not that proud of and I congatulate you for showing your failure, it's an inspiration to other new-comers, and and a reminder to us more expierianced modellers of where we all come from.
If you've used Acrylic paint it can be easily striped of using meths. then you can try again, and believe me painting a straight line is almost impossible on a curved surface. Check the techniques forum for useful tips and advice, and as Paws4thot says mottling is notoriously difficult especially with a brush and acrylics, even with a stippling btush.
Hope this helps and looking forward to hearing and seeing more of your adventures.
Remember we do this for fun John the Pom