As requested I have updated the VPet Manager to have a toggle for Always On Top. You can check this box in the Setting Menu.

Sprites can be larger then 16x16. Please keep sizes are a multiple of 16 to ensure proper sizing and scale. 

As always if you experience any issues please let me know either in the comments or by joining the VPet Manager discord (https://discord.gg/kkKKxsPrNV)