It's a good start to a game, but there are a lot more ways you could expand upon this. Better art would surely come with time and practice, but besides that...
- a larger viewing area to admire Pau's figure and costume(s)—a 9:16 phone-sized display would be perfect for showing off more of her body;
- more contact points to rub Pau—breasts and cheek are nice, but more space would allow for more places to touch like headpats, stomach, butt, between the legs (depending on the costume, either pussy or strap-on);
- maybe some options to mix and match clothes—you buy clothes as a "set", but then can choose to wear one pair of pants or leggings with a different dress or top or something (in this way, you could also add new hairstyles); and
- better hit detection on the 'Breakout' game—honestly, I have no idea what part of Pau's head is part of the "paddle", and I feel like I lose lives randomly.