Who said you're too old to color with crayons!?
TIP #1: To get extra details like the ones in the iris, start with lighter colors first, then slowly layer darker colors on top. Then use a sharp object like needle or in my case I used the tips of my scissors and scratch out layers underneath
TIP #2: The white areas in this drawing are the actual color of the paper, so if you want something to remain white, be aware that crayons can be pretty unforgiving and in some cases it's hard to remove their pigment [ notice the gray lines at the bottom of the paper where the white is, that was NOT intentional and I did everything I could to get it out and it was just not gonna happen - I hadn't had much practice with crayons since I was a kid so I had to learn the hard way with this piece :/ ] - this is the case especially dark colors, so be careful not to get shavings or accidentally use dark colors over the areas that you want to keep light. ALWAYS start lighter and work your way slowly to darker. Very important to remember this!
More crayon art: If you like this drawing, this is literally childs play compared to Don Marco's crayon art, he is THE master crayon artist and I found him through looking up crayon art in google. You won't believe your eyes!!! [link]