well assuming you are on PC...
To put your own picture in the bio you have to find the "player_silhouette" inside of the b_nonpersistent texture and import the photo you want. The helmet entails basically the same process. Steal a helmet texture either from the game or from one of the mods, edit it in photoshop, and then import it into whichever texture you want to replace in the bespoke helmets directory.
If you look in the mods, you should find the F1 2010 texture editor V0.5. This makes it about as easy as its going to get