Need help

[rado7rado]

Hello.I need a little help about this vektor drawing.I am new to illustrator so sometimes i need help.Could someone help me to figure out how to make this thik lines (in picture indicated by an arrow) thiner.Picture is added beneath my post

Thanks for any advice in advance.

[Monika Gause]

That depends on how the artwork has been built. Might be done by either opening the strokes panel and defining a thinner line or by using Object > Path > Offset path. You could check out: https://youtu.be/8Z0jQl3RBts

[rado7rado]

i tried everything but i fail.Could you look and try.I uploaded file on this site:

i tried everything but i fail 

[rado7rado]

Or this link if first is not ok.Link 

[Monika Gause · Accepted solution]

The shapes are all connected. You can't make just that part thinner. At least not without disconecting them beforehand.

That will require quite an effort.

How to edit paths: https://helpx.adobe.com/illustrator/using/editing-paths.html

[rado7rado]

Ok thanks for answer but this is too much for me.I use illustrator omly for few days so  this is quantum mathematic for me.I will try looking for another solution.