[abadsvt]

Looks good but i would recommend going a little thicker for your 2x4 rails. Not trying to be rude or anything but .083 is pretty thin and even though you have 1/2x2" bracing it still attaches to the .083. You could have 1" thick bracing but it isn't worth anything because its only as strong as what you are attaching it too. I would go with .120 2x4. Make sure you "V" the butt joint on the 2x4's when you attach them to the other pieces. That way when you weld it up you are getting full pen on both sides of the steel. Anyways good luck and nice start.

ps. I like the look of that 1/2"x2" bracing. Very creative.

Josh