When the stylus isn´t touching the tablet, the brush size appears to be much bigger.Sorry if it´s a stupid question, but I seriously can´t figure it out. It´s really hard to draw this way and I don´t know how to fix it. Am using a Wacom Intuos Pro.
No, it is not a stupid question. The issue you are facing with Krita and your Wacom Intuos Pro is related to software settings. You need to adjust the brush size settings in Krita or check the sensitivity settings for the tablet to fix the problem.