It's a cool picture, but your background is a smidge off.
The RA and Tib universe break apart with Red Alert 1. The allied victory in RA1 leads to Red Alert 2, while the Soviet victory in RA1 leads to the events of Tiberium Dawn and Tiberian Sun.
Yeah I know the tow series break apart but origionally they were releated and still is in some way . as for the back ground I couldnt do better than this really , it took me 4 backgrounds to mexture into this one sooo I did my best hopfully I'll do better in the futre , thanks .