But it should not be hit or miss. It's very easy to get right if you do take the basic step of doing some construction sketching first, but it's pretty apparent that's not what you're doing.I'm still having trouble with the leg proportions, although the first drawing seems an improvement.
If you're interested in improving, I'm happy to help. On the other hand, if you're not interested in the specific suggestions I'm making, I'll clam up. I don't want to come across as endlessly critical, and don't want to parrot the same suggestions again and again.
In short, if you want advice and are willing to actually try the suggestions, just ask. Otherwise, this is my last comment.