My 2 year old was also very excited when I showed him the fabric and told him I'd make him a shirt.
I decided to use an old pattern found in the Sewing for Boys book!
I've sewn a lot of patterns from that book--it's one of my most used sewing books.
One modification I made to the pattern is that I used cuffs and a band to finish it off.
I wanted to add a pop of black and this way the shirt will last a while longer for my growing boy!
The quality of the fabric is very nice. It is an organic cotton lycra jersey and is quite wide at 65". It is printed in Europe by Elvelyckan Designs and is GOTS certified!