Thank you for sharing your post. I have to say I would have never found it, if it weren't for the listing of contests on the Steembasicincome post. Now I am glad I had the opportunity to read your post.
First of all, you have a great mom. You are so right in the way you respect and love her. Your mom seems to be a very supportive and stable factor in your live. It is important to have someone you can always turn to. It is even better when that someone is someone who knows you so well.
Second, your mom is very lucky to have you too. Your gift to her means so much more than a gift bought in a shop. All the time it took, and the effort, the love you put into it while drawing. You gave her the best gift ever. Good thing you laminated it. Paper doesn't keep its perfect state that long.
Third, wow can you draw. The drawing is amazing.
Graduating from highschool is quite an achievement, you should be proud of yourself. It is a shame other familymembers were not there to celibrate it with you, but that doesn't make it less important.
Keep up the good work. You are a good son, and a great artist.