Hello! So I was trying to a small animation for a spokeword I have written, and therefor I jumped at krita right away.
Really nice program!

But now I need help. It's probably just me being a noob.

I wanted to add an extra layer to do some colour and colour shading, and that works fine... my problem is, that everything on my new layer...
Seems to be in every single frame, even tho I didn't colour the start but legit just one frame... and I can't seem to change it.
Can someone explain it plz?

Animation and colouring lineart seem to be two of the things that cause most confusion and you're trying both of them at the same time so it's understandable that you're having problems.

Can you post a link to a full screenshot, showing the Layers docker and the Timeline docker? This is the only way that anyone will be able to properly understand your situation and the difficulties you're having.

When you create a new frame (with Create Blank Frame) and draw in it, the contents of that frame are repeated or held for every frame to the right. These are called Held Frames and are indicated by the thin horizontal blue line going through every frame to the right. This is very useful. If you don't want this to happen then just go to the next frame (i.e. the first held frame) and do Create New Frame on it. That will make an empty frame which will then be repeated/held to the right.

If you're trying to use a 'colorize' mask on an animated layer then that won't work, it only works on a non-animated layer. (Either that or I haven't figured out how to use it on an animated layer.)

Using the Fill tool will work well for clean lineart with no gaps if you have an animated layer for colouring under your animated lineart. In the Tool Options docker, make sure you have 'Limit to current layer' turned off and 'Grow Selection' set to 1 or 2 pixels to avoid white edges where the colour fill meets the lineart. If you have more than just a few different colours this will be a long and boring task.

The alternative to a colouring layer would be to colour the lineart on the animated character layer as you draw it and this would be a better way if your frame to frame content has lots of duplicates and moves rather that newly drawn lineart on each frame. You can mix the two methods.

I know that there are held frames to the right... the thing is, I'm trying to draw something in the middel of the animation, and yet it shows up in the frames to the left. I'll post a screenshot later.... can't right now..

Hey, the way Krita works is it does not create a keyframe when u make a new layer in Animation. So that is why it seen on all frame. Click on the frames and add a keyframe, now it will only be shown on a single frame(most probably on the first frame or "0" frame number) You can then drag the frame to the desired place.