I just thought of a solution to a problem I've been having for a long time and thought I would share.
Here's an arm from one of my old projects:

I usually make my arms like that because when the arm bends I want this overlapping thing going on:

The problem with this are these gaps that pop up between the different fills:

They're not really visible unless you do close ups, unfortunately I do a lot of close ups.
The reason you get these gaps is because lines in Anime Studio end like this:

Instead of like this:

What you can do to get rid of the gaps is to make a circle and fill it with the same color as your outline:

Then make a cross in it (for accuracy):

Place it dead center over a point where a gap appears and make it the same size as your outline in that position:

Bind the circle to the same bone as the point it's over and:

Yaay!
I tried doing it at the end of these lines as well for a smoother look:

Maybe this is really basic stuff but I haven't been reading these forums as much lately and just now thought of this technique despite using Anime Studio for years...
