To commission a pet portrait from me, first of all, please just wing me an email of what you would like.  
Prices range from £150 for a small charcoal portrait, up to several hundred pounds for a large watercolour.  
All portraits are presented in a mount.  P&P varies according to size.  Please bear in mind that the accuracy of the likeness to the pet you want me to paint is dependent on the quality of the photos that you send me.
Can't wait to hear from you! 
Lucinda.