British-Heavy-metal-guy 
Thats the thing with little to absolute zero self confidence.
One does not know how to say the words "Thank you" in the direct path of praise, gratitude or appreciation. And if backed into a corner to be pressured into acknowledge it, It is extremely common to be completely out of the comfort zone. One may downplay it further or freeze up entirely. Feeling "positive" about ones efforts and gaining attention for it can be uncomfortable and burdening (or feeling unworthy.) If you manage to drag a "Thank you" out of them, Whether they mean it or not is another story for you to figure out.
Sadly...Its the only way one might know. No other way is possible in ones mind. Possibly due to past events and/or trauma related events outright leading to a lack or no confidence at all.
...There are ways "if" you know how to get a sincere "thank you" out of someone and utterly launch their confidence into the air instead of dragging it out of them. Describe their efforts in great detail, Prove to them you SEE the effort:
"Your efforts have absolutely paid off, There is no doubt about that. It takes a special skill and great patience to achieve what you have created. There are not many who can do what you have done. You have spent a considerable amount of effort and time to appreciate the finer details. Look! See how you have perfected "this" detail? and "That" detail?
The evidence is clear, If you decide to create more you will only come to greater outcomes.
You have yourself to thank for this, The practice you put in and the effort for the final outcome. Take pride in what you have done. I do hope you make another. I would be honoured to see the next outcome when the time is right for you. Well done."
...Sometimes however...You might not get an outright thank you. But with the right words, Encouragement can give who ever needs it a little boost and much needed emotional support. Gratitude can come later.
One does not know how to say the words "Thank you" in the direct path of praise, gratitude or appreciation. And if backed into a corner to be pressured into acknowledge it, It is extremely common to be completely out of the comfort zone. One may downplay it further or freeze up entirely. Feeling "positive" about ones efforts and gaining attention for it can be uncomfortable and burdening (or feeling unworthy.) If you manage to drag a "Thank you" out of them, Whether they mean it or not is another story for you to figure out.
Sadly...Its the only way one might know. No other way is possible in ones mind. Possibly due to past events and/or trauma related events outright leading to a lack or no confidence at all.
...There are ways "if" you know how to get a sincere "thank you" out of someone and utterly launch their confidence into the air instead of dragging it out of them. Describe their efforts in great detail, Prove to them you SEE the effort:
"Your efforts have absolutely paid off, There is no doubt about that. It takes a special skill and great patience to achieve what you have created. There are not many who can do what you have done. You have spent a considerable amount of effort and time to appreciate the finer details. Look! See how you have perfected "this" detail? and "That" detail?
The evidence is clear, If you decide to create more you will only come to greater outcomes.
You have yourself to thank for this, The practice you put in and the effort for the final outcome. Take pride in what you have done. I do hope you make another. I would be honoured to see the next outcome when the time is right for you. Well done."
...Sometimes however...You might not get an outright thank you. But with the right words, Encouragement can give who ever needs it a little boost and much needed emotional support. Gratitude can come later.