I'm a really big fan of The Lost Vikings and this definitely has some of that dna. If I could make a few suggestions for if you carry this on.
1. Make switching between the dragons more obvious (highlight, focus, something like that)
2. Give each dragon a unique ability that allows them to solve a puzzle only they can solve
3. As mentioned, the controls were just not quite there. With a platformer, really tight controls are key.
Excellent first jam entry. You should be proud of yourself for getting something done and in on time, even if it's not as much as you wanted. 48 hour jams skew a little bit tougher, so you did great.