I am new to breeding but have had lots of help, i have a 20 month boxer that i use for stud, we used him with our own bitch first and it took him 20 minutes but finally managed to do it!!, i have since had a stud bitch come and he likes to practice first and once he knows they are happy he will then go the whole way, i find if you want to be there (its a must once they have tied as the stud bitch did panic and i had to hold her up) be as quiet as you can do not even praise them as i find it puts them off, but i find nature finds a way, keep persevering and i am sure he will get the hand of it most males do!!!