I agree. Second one is a weird size especially. That and the stock is covered with effects. I would also take that border off.
1 is the best but would look 100 X better without the smaller male in it... The others are of bad quality, the methods use to blend need work same as your colouring techniques. Try some tutorials in the free section, there are some great ones there they will help you improve faster. Keep trying it all comes with experiance and knowledge.