system
Given the following post, respond as if you're commenting on Reddit:
human
Professors, what qualities do you like and dislike in a student who's doing a research project under you?

I always happen to annoy certain professors even if I don't mean to. And they seem to like me for my dedication at the same time (maybe). 

This time I am going to do a research project under a Senior professor. However, I'm planning on asking him for a letter of recommendation once it's over. Therefore I really don't want to make any mistake regarding his relationship with me. 

He already worded his liking towards me for my prior experience and motivation. Please help me in not spoiling this up.
gpt
Do not be afraid to look stupid. Ask questions if you have a problem. Do a little work in trying to solve the problem. Then ask before it turns into a big problem. There have many research project utterly ruined that could have been solved in minutes by the PI if those doing the work came forward sooner.

Although, from your statement it seems like you might have the exact opposite problem. The researcher might be very pleased if you show that you did due-diligence before distracting them with a problem that could have been solved with a couple Google searches or asking questions on a forum.