Hey, neat.
And demonstrating clearly that you're definitely a better artist than I am, given the length of the development cycle my version went through.
Let's see... annular radiator rather than paired 'heater' types in the wing roots, no landing windows, single tail rather than twin, and a gull wing rather than a 'flat' one - apparently bent at the folding seam or just outside it. Nice variations, all. ^_^
With your permission, I may adopt the last of those, given that I was kind of uneasy about needing to pipe the radiators' airflow around the landing gear in my 'current' version. Shortening the gear with a gullwing would let me dodge the entire question.