Your flies look really good, especially the second one. That doesn't look over dressed at all.
In my pics the fly is orange flat braid, purple chenille body with natural guinea wrapped as a hackle and then 2 turns as a collar. The guinea is placed there to hold up the fox so the first couple wraps don't just collapse against the shank/tube as you may have noticed when you wrapped yours. dubbing balls made from whatever are always a good idea before using AF as a prop, the ball doesn't need to be large at all, just make sure your first wraps are tight against it and every consecutive wrap is tight against the one before it.
straight chenille does work well for props but the materials will collapse around them because there isn't enough body to hold everything up. That being said I tend to use chenille balls on my rear posts and fox in the front. I don't like my rear post being as large as the front one, flies swim better this way also. I also usually don't tie a lot of long flowing stuff into the rear because it has a tendency to foul the trailer hook, even with tubes.
every material has a certain place depending on what your fly design is. remember these types of flies are constructed not just slapped onto a hook, all willy nilly. (example - I'm designing a mouse tube pattern for bull trout, been changing it constantly in my head trying to get it just perfect on how it will look, swim, float......etc) (This mouse fly may also be adapted to fish steelhead top water as well)
When you put your hair in your loop make sure to spread it evenly. make sure to also close the loop on the shank/tube side, pinch the thread just below the hair on the spinner side and then spin the spinner while pinching tightly, once your happy with how spun the thread is pull towards yourself and let go and it will all spin. This is the best technique I have learned to prevent materials from "creeping up" the loop towards your shank/tube as you spin it
PS - if you go to the blog there is a full step by step instruction for the pics I shared here.
PPS - make sure to have some P&P bunnies on you at all times
keep up the good work