I too have just discovered the awesomeness of tri tip. It is hard to come by around here. Yours doesn't look bad at all! Keep it up, and you'll soon have that tri tip nailed down. It makes a great piece of beef to cook when company comes over.
Matt - KCBS CBJ; 18.5" WSM; UDS; DigiQ DX2; CharBroil Gasser; Maverick; OTS; etc.