The one who searches will definitely find something

I was thinking how I can practice my skills and knowledge and I found out I have several drawings left from school. I started to look for them and found them. The results are here:

My fiancée was wondering what if people will think that it is not me who makes these parts. So my opinion on this is people can think what they want but it would have no sense if it was not me who makes them. I do everything. Perhaps there are mistakes in the parts, but I still practice.