Not a thing there that is fancy. Measure twice, cut once, grind once, and tack it.
Check your work, weld a little more if that makes you happy drill holes in the TOP plate so you can fill the legs with what ever makes your pickle squirt and put corks on the holes. Paint them PINK!!!
Pull a cork or two it doubles as a sex toy. I had to say that. OH deburr if you go the latter OUCH.:-)
Regards