In my opinion, if you go into an LSD experience expecting that it is going to be anything like MDMA, you will be disappointed.
I followed a similar pattern to you. I did MDMA and I loved it. I started reading more about LSD, and I wanted to try it too. What could go wrong? Drug experiences were fun and easy, right?
My first LSD trip, as a result, was a disaster. I was very disappointed. It was not until later, when I came back to LSD and allowed it to be LSD, that I was able to appreciate it positively. Now, I can see some similarities between the two, but I could not see them during that first trip.
On a low dose of LSD (half a hit or a hit), you are likely to feel a bit stimulated, see enhanced colors, laugh, see some minimal distortions. On a high dose, it can become quite confusing. You may lose your sense of time and your sense of self. While MDMA sort of enhances the ego by making you feel very IN your body and drawing your attention to your senses (OMG, I feel the air! OMG, water tastes sweet!), LSD can dissolve the ego by giving you a sense that you are everything around you, or that you are nothing and universe is vast. The way that LSD draws attention to your senses is different, as it can be super focused or distorted. For example, I remember being in a pool and feeling CONVINCED I had peed on myself because all I could feel was the dampness of the water on my legs. Very different from being in a pool on MDMA and just marveling at how good it feels to float in the water.
All of this is just my own subjective observations, so take with a grain of salt. But, I think they are two very different substances. Both with a lot to give. I have had some amazing experiences with both. However, I have also climbed a mountain on LSD and then freaked the f out at the top of the mountain because...death. So, there is that.
If you do LSD, do it because you want to know what it is like to do LSD. Don't do it because you are chasing another MDMA experience. You'll know what it is like to do LSD after you actually do LSD. Just accept that your MDMA experiences have not really prepared you for it, because it is another world entirely.