You've got to keep your weaves tighter together. Also, torch angle appears to be aimed at the flat piece a little too much. Unless it's the camera angle, it looks like you have more weld on the flat piece instead of an equal amount of weld on both pieces.
The weld also looks a little "cold". Try upping your amperage 5 amps at a time, until the metal flows a little better.
To help you understand what I'm saying......
'79 CJ5, AMC 360, t-18/d20 twin stick, dana 30/amc20(Mosers), Edelbrock Performer intake, Holley 600, ps/pb, DUI HEI, 'glass tub/1pc. tilt nose, 33x12.50 BFG AT's.
There's a fine line between "hobby" and "mental illness".