Being able to draw (not only copying but custom designs) is mandatory, and there are very few studios left which only work from flashbooks. Customers want custom designs. The competition is very good, so most artists want to see a portfolio that shows some developement over the years. Learning to draw is not part of the apprenticeship, you'd have to show you already can draw.
The standards are very high. If you are able to get an apprenticeship you just earn peanuts, so you have to have a second job to earn a living.
From what I know (and from what you can read on Toytown) expats have a hard time with the German love of discipline, and discipline and hard work is especially expected if you are an apprentice. Even some very talented people just don't make it.
There is a drawing section on this board.
http://www.tattooscout.de/component/option,com_forum/Itemid,44/page,viewforum/f,19/
Feel free to post some drawings there and get some feedback.
There are a lot of things you should take into account if you are moving to Germany and trying to live here. Some things are just very different, and maybe you'd want to read up on culture shock and the possible symptoms. Or just dig into Toytown.
I don't know if it is of any help to you, but maybe you would like to take a look at the drawings in the Pro-flash-section
http://www.tattooscout.de/component/opt ... orum/f,35/. or the drawings on my website.
It might give you an impression of what is expected.
I was lucky to find a good mentor who was willing to teach me. Most tattooers are not due to bad experiences. A lot of people are interested in being a tattooer, mostly because they have some weird ideas about the job, and almost 90% of theapplicants overestimate their drawing abilities, because mom and dad were so enthusiastic. As a result, most shop managers are not very inclined to even take a look at portfolios or teach at all. Because in most cases it is just a waste of time and money. So don't be disappointed if you are confronted with this attitude. All the jerks spoilt it for the rare talents.
If your German is up to it you might also want to read this
http://www.tattooscout.de/component/opt ... c/t,20139/
or this
http://www.tattooscout.de/component/opt ... ic/t,4482/