I have soloed some time ago. I always had somebody experienced standing next to me when I flew my plane...
I was able to take off and land while still keeping my Sig Kadet LT-40 in good shape - usable for the next flight
Last Monday, I went with my son to fly after work. I took off with no problems, let me son fly via the buddy box and then I decided to land. At that time, there was nobody else at the field.
I approached once, lowered my altitude and air speed and decided to make another approach for a final landing.
On the second approach, the plane was low, it was coming to the center of the field (at least so I thought) and I was sure it was going to be another successful landing. However, all of a sudden, the plane went out of sight... when I tried to figure out what happened I heard a laud hitting sound... I hit a tree that was right on the far side of the field across from where we stood, in a distance of about 900 feet away to my left...
When I went to get the plane from that place, I was surprised to see that it was just sitting on the ground, almost intact. The only problem was the front wheel that was bent a bit.
I took the plane back to the pits, fixed the front wheel , tested all controls, ensured everything was in place, re-checked all servo connection and did an on ground radio test. When it all looked OK, I decided to try again.
I took off again, and decided to practice my landing. I approached to land, from the same direction. I asked my son, who stood next to me, to let me know if he thought that I was off the field (in an effort to avoid the mistake I made in the previous approach). When we both though that this time everything was OK, and that this time we are going to land fine, I hit the exact same tree...
I cannot explain it, but I'm sure there is something wrong with my ability to estimate the distance. What I wanted to ask you guys, is how do you handle that? What can I do to overcome that problem?

BTW: The plane got tangled at the tree top and I had to get the telescope pole from the club's shed to get it down. The plane had no damage until it fell to the ground and the rudder was broken...
Saturday, I'll try again...

Thank you for any advice,
OG.