The way you're thinking is right, you can always go back and tweak things, but if you don't have a good enough foundation then it is going to be a lot more work to do adding major changes. For example, the animation that I made changes to had 15 frames from start, I had to extend it to 45 in order to get enough space to work with.
As long as you don't fill in the color manually any way is fine. I personally keep the color on the same layer and make more frames on the timeline if I want more colors. Or if I want to change color with code I convert the colored area in to a symbol and give it an instance name. If I want shading with that then I just put transparent black and white on a layer on top of the color symbol.
What I should have explained in the last post is also that without the three different things I explain, you won't feel any weight.
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Beast Original.swf [ 75.81 KiB | Viewed 1093649 times ]
The way he moves, slows down and accelerates gives us a sense that he is heavy, which he should be. Especially if you look at how long time it takes for him to get up again. A small detail to look at is how the cock interacts with her, before it goes in it is actually pressed together, however you don't really notice it too well. But when it goes out it brings her with it when the tip gets stuck. That's a small detail that makes it a bit more interesting. It also is a detail that shows that the penis really goes inside her and not behind her.
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Beast Improved.swf [ 87.32 KiB | Viewed 1093542 times ]
There is a way you can ease the tweens under properties, but this is how I prefer to do it,
viewtopic.php?f=29&t=1921 .