Thanks all for the feedback.

I know they don't look much like tiger ears. Unfortunately I don't have anything to put the requisite white spot on the back, or I would have. The seams are straight because I just glued them to some craft foam. It keeps the shape really well and gives them more support.
They're adorable (and so is your brother, BTW)!
Yeah, for tigers, that white spot is a signalling device- when the ears are down in threat or anger, the spots are really obvious from the front- the other tiger seeing it will back off, or know he's in for a fight.

Take a look at some of the smaller cats- the wilder ones- they often have a similar marking in the same place. Some folks call them "flash-spots".
Cheers, and keep making such cute things!
Murra Dragon